來(lái)源:網(wǎng)絡(luò)資源 2023-09-25 20:21:53
1動(dòng)詞的五種基本形式
動(dòng)詞主要用來(lái)表示動(dòng)作、狀態(tài)和性質(zhì),而動(dòng)作和狀態(tài)的發(fā)生有具體的時(shí)間和表現(xiàn)方式,這就是英語(yǔ)中動(dòng)詞的時(shí)態(tài)。英語(yǔ)中動(dòng)詞的時(shí)態(tài)由動(dòng)詞的不同形式來(lái)表示。
英語(yǔ)動(dòng)詞的五種基本形式為:動(dòng)詞原形、第三人稱(chēng)單數(shù)、現(xiàn)在分詞、過(guò)去式和過(guò)去分詞。如:work—works—working—worked—worked。
1.動(dòng)詞的五種基本形式變化表
形式 |
構(gòu)成 |
例詞 |
動(dòng)詞原形 |
不帶to的動(dòng)詞不定式形式,也就是詞典中一般給出的形式 |
be,have do,learn |
第三人稱(chēng) 單數(shù)形式 |
一般在動(dòng)詞原形后加-s |
runs,likes |
以ch,sh,s,o,x結(jié)尾的動(dòng)詞,在詞尾加-es |
teach—teaches wash—washes go—goes pass—passes |
|
以輔音字母加-y結(jié)尾的動(dòng)詞,先將y變?yōu)閕再加-es |
study—studies try—tries |
|
以元音字母加-y結(jié)尾的動(dòng)詞,在詞尾加-s |
stay—stays play—plays |
|
現(xiàn)在分詞 |
一般在動(dòng)詞原形后加-ing |
read—reading |
以不發(fā)音字母e結(jié)尾的動(dòng)詞,去掉e再加-ing |
live—living write—writing |
|
以重讀閉音節(jié)結(jié)尾且末尾只有一個(gè)輔音字母的動(dòng)詞,雙寫(xiě)該輔音字母后再加-ing |
sit—sitting begin—beginning |
|
少數(shù)幾個(gè)以ie結(jié)尾的動(dòng)詞要變ie為y,再加-ing |
die—dying lie—lying tie—tying |
|
過(guò)去式與 過(guò)去分詞 (規(guī)則變化) |
一般在動(dòng)詞原形后加-ed |
work—worked |
以輔音字母加-y結(jié)尾的動(dòng)詞,先將y變?yōu)閕再加-ed |
carry—carried study—studied |
|
以e結(jié)尾的動(dòng)詞,直接加-d |
live—lived |
|
以重讀閉音節(jié)結(jié)尾且末尾只有一個(gè)輔音字母的動(dòng)詞,雙寫(xiě)該輔音字母后再加-ed |
stop—stopped plan—planned |
2時(shí)態(tài)的基本框架
常見(jiàn)六種時(shí)態(tài)的構(gòu)成及用法
(
用法:①現(xiàn)在經(jīng)常性的狀態(tài)或動(dòng)作;②客觀事實(shí)和真理。
構(gòu)成:①be+表語(yǔ);②實(shí)義動(dòng)詞作謂語(yǔ)
標(biāo)志詞:often, sometimes, usually, always, never, twice a month, every day/week/month/year(every系列)
例句:He usually gets to school early.他通常很早到校。
The moon moves around the earth.月亮繞著地球轉(zhuǎn)。
練一練
1.認(rèn)識(shí)從實(shí)踐開(kāi)始Knowledge practice.
2.如果明天下雨,我們就不去公園了。If it tomorrow,we to the park.
【答案】1. begins with.2.rains,won’t go
(
用法:表示過(guò)去的動(dòng)作或狀態(tài)。
構(gòu)成:①was/were+表語(yǔ);②實(shí)義動(dòng)詞作謂語(yǔ)
標(biāo)志詞:a moment ago,just now,ago, yesterday, last night/week/month(last系列)
例句:We went to Yunnan last Monday.上周一我們?nèi)チ嗽颇稀?/p>
1.She (not visit)her aunt last weekend.
2.My friend,Lucy, (study)for the math test and (practice)English last night.
【答案】1.didn’t visit 2.studied practiced
(
用法:表示將來(lái)的動(dòng)作或狀態(tài)。
構(gòu)成:①will/shall+動(dòng)詞原形;
②am/is/are going to+動(dòng)詞原形
標(biāo)志詞:tonight, tomorrow, from now on, soon, in the future, next year(next系列)
例句:The twins will go to the cinema with their parents tonight. 這對(duì)雙胞胎今晚將和他們的父母一起去看電影。
注意:
在時(shí)間和條件狀語(yǔ)從句中,用一般現(xiàn)在時(shí)代替一般將來(lái)時(shí)。
練一練
1.Mary’s birthday is on next Monday.Her mother (give)her a present.
2.It is very cold these days.It (snow)soon.
【答案】1.will give 2.is going to snow
(
用法:①此刻動(dòng)作:表示目前正在發(fā)生的動(dòng)作。②現(xiàn)階段動(dòng)作:表示目前一個(gè)時(shí)期一直在進(jìn)行的動(dòng)作,此刻不一定在進(jìn)行。
構(gòu)成:am/is/are+動(dòng)詞的現(xiàn)在分詞
標(biāo)志詞:am/is/are+動(dòng)詞的現(xiàn)在分詞;now, at present, at the moment, these days, look, listen
例句:Look! What are the children doing over there?
看,孩子們?cè)谀沁呑鍪裁茨?
注意:
表示位置移動(dòng)或狀態(tài)轉(zhuǎn)移的動(dòng)詞(come ,go, leave, arrive)等少數(shù)動(dòng)詞的現(xiàn)在進(jìn)行時(shí)形式可表示將要發(fā)生的動(dòng)作。
練一練
1.—Where is your father?
—He (fish)by the lake.
2.It’s 8 o’clock.The children (do)morning exercises.
【答案】1.is fishing 2.are doing
(
用法:過(guò)去某時(shí)正在進(jìn)行的動(dòng)作。
構(gòu)成:was/were+動(dòng)詞的現(xiàn)在分詞
標(biāo)志詞:at that time, this time yesterday, at 1:00 last night,at that moment, then, when表示過(guò)去時(shí)間的狀語(yǔ)從句
例句:I was reading when he came in.當(dāng)他進(jìn)來(lái)的時(shí)候,我正在讀書(shū)。
注意:在復(fù)合句中,如果兩個(gè)動(dòng)作同時(shí)發(fā)生,那么延續(xù)性動(dòng)詞用過(guò)去進(jìn)行時(shí);短暫性動(dòng)詞用一般過(guò)去時(shí)。通常在when或while引導(dǎo)的時(shí)間狀語(yǔ)從句中出現(xiàn)。
—What were you doing at nine last night?
—昨天晚上九點(diǎn)你正在干什么?
練一練
1.當(dāng)我進(jìn)來(lái)時(shí),他正在讀書(shū)。
2.你寫(xiě)信的時(shí)候,我在看書(shū)
【答案】1.He was reading when I came in.
2.While you were writing letters,I was reading a book.
(
用法:①到現(xiàn)在為止已經(jīng)完成的動(dòng)作,對(duì)現(xiàn)在還有影響。②從過(guò)去開(kāi)始延續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)。
構(gòu)成:have/has+動(dòng)詞的過(guò)去分詞
標(biāo)志詞:yet, still, just, so far, before, recently, once, already, lately, ever, never, since 1996, in Kunming,last/past, for ten years (for系列)
例句:He has only been to Kunming once.他只去過(guò)昆明一次。
I have been in the Youth Volunteers for five years.我來(lái)到青年志愿者隊(duì)已經(jīng)五年了。
注意:
since后面的從句用一般過(guò)去時(shí),主句用現(xiàn)在完成時(shí);短暫性動(dòng)詞不與一段時(shí)間連用。如果要與一段時(shí)間連用必須換成延續(xù)性動(dòng)詞。
非延續(xù)性動(dòng)詞 |
延續(xù)性動(dòng)詞 |
buy |
have |
borrow |
keep |
open |
be open |
close |
be closed |
begin/start |
be on |
come |
be here |
go |
be there |
finish |
be over |
die |
be dead |
catch a cold |
have a cold |
put on |
wear |
wake up |
be awake |
fall asleep |
be asleep |
lose |
not have |
join |
be in |
leave |
be away |
arrive/reach |
be |
提示:
have been to, have gone to和have been in的區(qū)別
have been to曾經(jīng)去過(guò)某地(現(xiàn)在已經(jīng)回來(lái)了),常與just, ever, never等副詞連用。
have gone to去了某地(現(xiàn)在還沒(méi)有回來(lái)),表示說(shuō)話時(shí)某人已不在現(xiàn)場(chǎng),可能在去的途中,也可能已經(jīng)到達(dá)目的地。
have been in已經(jīng)在某地,表示狀態(tài),后面常接表示“時(shí)間段”的狀語(yǔ)。
練一練
1.你已經(jīng)看過(guò)這部電影了嗎?
2.我已經(jīng)買(mǎi)這本詞典三年了。
【答案】1.Have you seen this film yet?
2.I have had this dictionary for 3 years.
3時(shí)態(tài)的判定
初中階段需掌握六種基本時(shí)態(tài)。學(xué)生可根據(jù)以下5點(diǎn)來(lái)判斷不同時(shí)態(tài)的選用。
(
遇到時(shí)態(tài)題時(shí),首先要尋找時(shí)間標(biāo)志詞,如果題干中有時(shí)間標(biāo)志詞,可以根據(jù)時(shí)間狀語(yǔ)選擇相應(yīng)的時(shí)態(tài)。需要注意的是,個(gè)別時(shí)間狀語(yǔ)可用于不同的時(shí)態(tài)中,考生需具體情況具體對(duì)待。
如:--I ___ a high school student this September.
--I can’t wait!
A. amB. wasC. have beenD. will be
方法點(diǎn)撥
第1步:分析語(yǔ)境:今年九月我就會(huì)是一名高中生了。我等不及了! 第2步:分析選項(xiàng),A項(xiàng):一般現(xiàn)在時(shí);B項(xiàng):一般過(guò)去時(shí);C項(xiàng):現(xiàn)在完成時(shí);D項(xiàng):一般將來(lái)時(shí)。第3步:根據(jù)時(shí)間狀語(yǔ)this September以及句子描述可知選D。
(2)
在有些情況下,動(dòng)詞的時(shí)態(tài)是由上下文語(yǔ)境來(lái)決定的,這就要求我們既要理解上下文的語(yǔ)境,也要掌握各種時(shí)態(tài)的靈活運(yùn)用。
如果一個(gè)英語(yǔ)句子中既沒(méi)有出現(xiàn)時(shí)間狀語(yǔ),也沒(méi)有可供判斷時(shí)態(tài)的上下文,那么就
應(yīng)當(dāng)把這個(gè)句子翻譯成中文,利用我們的母語(yǔ)知識(shí)來(lái)判斷這個(gè)句子該用何種時(shí)態(tài)。
如:—Where is Miss Li?
—She ___ the laboratory.
A. is going toB. has gone to
C. went to D. goes to
方法點(diǎn)撥
第1步:分析語(yǔ)境“李老師在哪里?” “她去實(shí)驗(yàn)室了。”第2步:分析選項(xiàng),A項(xiàng):一般將來(lái)時(shí);B項(xiàng):現(xiàn)在完成時(shí);C項(xiàng):一般過(guò)去時(shí);D項(xiàng):一般現(xiàn)在時(shí)。第3步:結(jié)合語(yǔ)境可知這里指“李老師去圖書(shū)館的動(dòng)作發(fā)生在過(guò)去,在雙方說(shuō)話時(shí)她還沒(méi)回來(lái)”,應(yīng)用現(xiàn)在完成時(shí),故選B。
(3)
主從復(fù)合句中謂語(yǔ)動(dòng)詞時(shí)態(tài)的一致主要有以下幾種情況:
①
如:He is going to be a scientist when he ____up.
A. growsB. grewC. will growD. has grown
方法點(diǎn)撥
when引導(dǎo)的時(shí)間狀語(yǔ)從句遵循“主將從現(xiàn)”原則,即主句用一般將來(lái)時(shí),從句需用一般現(xiàn)在時(shí)。故選A。
②
如:The children ___ a picnic in the park when it suddenly began to rain.
A. haveB. are having
C. had D. were having
方法點(diǎn)撥
找出題目中的關(guān)鍵詞“when”。when引導(dǎo)的時(shí)間狀語(yǔ)從句的時(shí)態(tài)為一般過(guò)去時(shí),且“began”為短暫性動(dòng)詞,主句表示延續(xù)性的動(dòng)作,謂語(yǔ)動(dòng)詞應(yīng)用過(guò)去進(jìn)行時(shí)。故選D。
③
如:—Long time no see!
—Oh! It ___ five years since we met last time.
A. wasB. wereC. has beenD. have been
方法點(diǎn)撥句意為“好久不見(jiàn)!”“哦!自從我們上次見(jiàn)面以來(lái)已經(jīng)五年了。”since是現(xiàn)在完成時(shí)態(tài)的標(biāo)志詞,因此主句應(yīng)用現(xiàn)在完成時(shí)態(tài)。主語(yǔ)It是第三人稱(chēng)單數(shù),謂語(yǔ)動(dòng)詞應(yīng)用has。故選C。
④
如:I don’t know if he ___ to play basketball with us.
A. comesB. cameC. will comeD. has come
方法點(diǎn)撥句意為:我不知道他是否會(huì)來(lái)和我們一起打籃球。if作為“是否”講,賓語(yǔ)從句中的謂語(yǔ)動(dòng)詞的時(shí)態(tài)不受主句時(shí)態(tài)的限制,因?yàn)槭虑檫沒(méi)有發(fā)生,應(yīng)用一般將來(lái)時(shí)。故選C。
⑤
如:I didn’t understand ___, so I raised my hand to ask.
A. what my teacher says
B. what does my teacher say
C. what my teacher said
D. what did my teacher say
方法點(diǎn)撥第1步:分析選項(xiàng)可知本題考查賓語(yǔ)從句的語(yǔ)序及時(shí)態(tài)。賓語(yǔ)從句需用陳述句語(yǔ)序,排除B和D項(xiàng)。第2步:根據(jù)“時(shí)態(tài)一致”原則,即主句的謂語(yǔ)動(dòng)詞為過(guò)去時(shí)態(tài),從句的謂語(yǔ)動(dòng)詞需用相應(yīng)的某種過(guò)去時(shí)態(tài)。故選C。
(
在這種情況下,動(dòng)詞的時(shí)態(tài)是由上下文已有的時(shí)態(tài)信息來(lái)確定,這就要求我們準(zhǔn)確判斷上下文所表達(dá)的時(shí)態(tài)信息,確定恰當(dāng)?shù)臅r(shí)態(tài)。
如:—I can’t find David. Where is he?
—He ___ for tomorrow’s competition at home.
A. prepares B. prepared
C. is preparingD. has prepared
方法點(diǎn)撥 第1步:分析語(yǔ)境:“我找不到大衛(wèi)。他在哪兒?”“他正在家里為明天的比賽做準(zhǔn)備。”第2步:?jiǎn)柧錇橐话悻F(xiàn)在時(shí),可知答語(yǔ)表示他此刻正在為明天的比賽做準(zhǔn)備,應(yīng)用現(xiàn)在進(jìn)行時(shí),故選C。
(
在英語(yǔ)中,不少句型與一些動(dòng)詞在時(shí)態(tài)的運(yùn)用方面都存在著特定的對(duì)應(yīng)關(guān)系。
①
如:Hurry up, or you ____ the early bus.
A.missB. missedC. will missD. have missed
方法點(diǎn)撥
分析句子結(jié)構(gòu)可知這是“祈使句+or +陳述句”句型,陳述句的謂語(yǔ)要用“will+動(dòng)詞原形”,故選C。
②
句型中用現(xiàn)在完成時(shí)。若is改為was,就用過(guò)去完成時(shí),有時(shí)以上結(jié)構(gòu)中的first也可換成second,third,fourth等,其中的time也可換成其他名詞。
如:This is the first time that I ___ a baseball game.
A. am watching B. was watching
C. have watchedD. will watch
方法點(diǎn)撥
分析句子結(jié)構(gòu)可知此處考查T(mén)his is the first time…句型,后面所加從句應(yīng)用現(xiàn)在完成時(shí)。故選C。
中考試練
1.Maria _______ exercise in the morning. She prefers doing it in the evening.(not do)
【答案】doesn’t do
【解析】句意:瑪麗亞早上鍛煉。她更喜歡在晚上鍛煉。橫線處需要填寫(xiě)動(dòng)詞的適當(dāng)形式作謂語(yǔ)。分析句子結(jié)構(gòu)可知,此句為一般現(xiàn)在時(shí),謂語(yǔ)動(dòng)詞否定需借助助動(dòng)詞do/does,主語(yǔ)Maria表示一個(gè)人,用助動(dòng)詞does, does not= doesn't。故填doesn’t do。
2. —What do you think of your hometown, Kate?
—It ___ a lot. It’s more beautiful than before.
A. has changedB. changes
C. will change D. change
【答案】A
【解析】考查現(xiàn)在完成時(shí)的用法。句意“你認(rèn)為你的家鄉(xiāng)怎么樣,凱特?”“____很大。它比以前更美了。”變化很大是相對(duì)于之前,對(duì)現(xiàn)在造成影響,故用現(xiàn)在完成時(shí),且由“It”可知主語(yǔ)為單數(shù)應(yīng)用has。故選A。
3. —Did you do anything interesting last Sunday?
—Not really. I just ___ at home.
A. stayB. stayedC. will stayD. am staying
【答案】B
【解析】考查現(xiàn)在完成時(shí)。【解析】考查一般過(guò)去時(shí)的用法。句意“你上個(gè)星期天做了什么有趣的事情嗎?”“沒(méi)有什么有趣的。我只____在家里。此處是在描述過(guò)去發(fā)生的事情,需用一般過(guò)去時(shí)。故選B。
4. —Do you know when Nick left?
—He ___ for half an hour.
A. will leaveB. left
C. has left D. has been away
【答案】D
【解析】考查現(xiàn)在完成時(shí)的用法。句意“你知道尼克什么時(shí)候走的嗎?”“他____半個(gè)小時(shí)了。”由句意可知尼克已經(jīng)離開(kāi)半個(gè)小時(shí)了,動(dòng)作由過(guò)去延續(xù)到現(xiàn)在,用現(xiàn)在完成時(shí)。for half an hour表示一段時(shí)間,leave是一個(gè)瞬間動(dòng)詞,不能表示延續(xù),后不接時(shí)間段,故排除C。be away離開(kāi),延續(xù)性動(dòng)詞,后可接時(shí)間段。故選D。
5.—Can John play
soccer with us, Mrs. Black?
—One moment, please. He ___ on the phone to his cousin.
A. talksB. talkedC. talkingD. is talking
【答案】D
【解析】考查現(xiàn)在進(jìn)行時(shí)。句意 “約翰能和我們一起踢足球嗎,布萊克夫人?” “請(qǐng)等一下。他____給他的表弟打電話。”根據(jù)語(yǔ)境可知約翰此時(shí)正在打電話,故應(yīng)使用現(xiàn)在進(jìn)行時(shí),F(xiàn)在進(jìn)行時(shí)的構(gòu)成是“be+doing”。故選D。
6.Look! A dog ___ a blind man across the road.
A. leadsB. leadC. is leadingD. led
【答案】C
【解析】考查現(xiàn)在進(jìn)行時(shí)。句意:看!一條狗____一位盲人過(guò)馬路。根據(jù)“Look!”可知,這里談?wù)摰氖钦诎l(fā)生的事情,應(yīng)該使用現(xiàn)在進(jìn)行時(shí)。故選C。
7.—Is your bike new?
—No, it’s an old one. I ___ it for three years.
A. has bought B. have bought
C. have had D. has had
【答案】C
【解析】考查現(xiàn)在完成時(shí)。句意“你的自行車(chē)是新的嗎?”“不,它是舊的。我已經(jīng)買(mǎi)了三年了。”根據(jù)主語(yǔ)是“I”可排除A、D。再根據(jù)后文的“for three years”可知此處應(yīng)填延續(xù)性動(dòng)詞,buy為非延續(xù)性動(dòng)詞,應(yīng)排除。故選C。
8.—Summer holiday is coming. What are you going to do?
— I’m not sure. Maybe I ___ to the beach.
A. goB. wentC. will goD. have gone
【答案】C
【解析】考查一般將來(lái)時(shí)。句意為“暑假要到了。你打算做什么?”“我不確定。或許我____海灘。”根據(jù)問(wèn)句“What are you going to do?”可知是問(wèn)將來(lái)的打算,所以答語(yǔ)應(yīng)該用一般將來(lái)時(shí),四個(gè)選項(xiàng)中,只有C項(xiàng)表將來(lái)。故選C。
9.—Long time no see!
—Oh! It ___ five years since we met last time.
A. wasB. wereC. has beenD. have been
【答案】C
【解析】考查現(xiàn)在完成時(shí)。句意“好久不見(jiàn)!”“噢!自從我們上次見(jiàn)面五年____了。”since是現(xiàn)在完成時(shí)的標(biāo)志,并且it作主語(yǔ),謂語(yǔ)動(dòng)詞用單三形式。故選C。
11.We ___ when the terrorists killed the people in Kunming on the night of March 1st, 2014.
A. were watching TVB. are watching TV
C. watched TV D. watch TV
【答案】A
【解析】考查過(guò)去進(jìn)行時(shí)。句意:2014年3月1日夜晚,當(dāng)昆明發(fā)生恐怖分子殺人事件時(shí),我們____。根據(jù)句意可知此處表示“(當(dāng)時(shí))正在看電視”,應(yīng)為were watching TV。故選A。
12.—___ you ___ what club you want to join?
—Not yet.
A. Do; decide B. Have; decided
C. Are; decidingD. Can; decide
【答案】B
【解析】考查現(xiàn)在完成時(shí)。句意“你____你想加入什么俱樂(lè)部了嗎?”“還沒(méi)有。” 根據(jù)答句“Not yet 還沒(méi)有”可知問(wèn)句用現(xiàn)在完成時(shí)。故選B。
13. —Where is Jack?
—On the playground. He ___ football with his classmates.
A. playB. played
C. is playingD. was playing
【答案】C
【解析】考查現(xiàn)在進(jìn)行時(shí)。句意“杰克在哪里?”“在操場(chǎng)上。他____和他的同學(xué)踢足球。”根據(jù)問(wèn)句是一般現(xiàn)在時(shí)可推知,在詢問(wèn)的時(shí)候,“踢足球”這個(gè)動(dòng)作正在進(jìn)行,所以應(yīng)用現(xiàn)在進(jìn)行時(shí)。故選C。
14.The train ___ when we got to the station. We had to wait for the next one.
A. has leftB. had left
C. left D. was leaving
【答案】B
【解析】考查過(guò)去完成時(shí)。句意:當(dāng)我們到達(dá)火車(chē)站的時(shí)候火車(chē)____。我們不得不等下一趟。根據(jù)句意可知到達(dá)火車(chē)站時(shí)火車(chē)已經(jīng)離開(kāi),為過(guò)去的過(guò)去,應(yīng)用過(guò)去完成時(shí)。故選B。
15.It’s nice to see you again. We ___ each other since 2014.
A. won’t see B. don’t see
C. haven’t seen D. didn’t see
【答案】C
【解析】考查現(xiàn)在完成時(shí)。句意:很高興又見(jiàn)到你了。我們自從2014年以來(lái)彼此____。根據(jù)關(guān)鍵詞since可知本句應(yīng)用現(xiàn)在完成時(shí)。故選C。
總結(jié):動(dòng)詞的時(shí)態(tài)是中考的必考點(diǎn),在單項(xiàng)填空中考查?忌烧莆找韵屡卸〞r(shí)態(tài)的技巧:
①
②
③
④
⑤
4時(shí)態(tài)在句子中的運(yùn)用
一、完成句子
1.當(dāng)爺爺讀書(shū)時(shí),他戴著眼鏡。Grandpaglasses when he.
2.沿著這條路走,你將看到挨著銀行有一個(gè)圖書(shū)館Just go down this road and youthe library next to the bank.
3.Paula很高興她已經(jīng)找到了她丟失的手表Paula is pleased that sheher lost watch
4.我們很驕傲中國(guó)這些年正變得越來(lái)越強(qiáng)大We’re proud that China stronger and stronger these years.
5.湯姆安全地到達(dá)了機(jī)場(chǎng)。Tom the airport safely
6.我們發(fā)現(xiàn)一個(gè)男人躺在地上。We a man lying on the ground.
7.今天下午有一場(chǎng)足球比賽There a football game this afternoon.
【答案】1.wears,reads
2.will see3.has found
4. is becoming5.reached
6. found7. will be
二、翻譯句子
1.我們已經(jīng)很久沒(méi)見(jiàn)了。
2.到目前為止,他已經(jīng)解決了許多困難。
3.直到上星期五,我才知道你會(huì)來(lái)。
4.那里有一家工廠正向河里倒廢水。
【答案】1.We have not seen foe a long time.
2.So far, he has solved a lot of difficulty.
3.I didn’t know he would come until last week.
4.There is a factory pouring waste water into the river.
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