本單元語法主要涉及 常見動詞時態(tài)的回顧。中學(xué)階段常用時態(tài)有：一般現(xiàn)在時；現(xiàn)在進行時；一般過去時；一般將來時；現(xiàn)在完成時；過去完成時。在我們學(xué)習(xí)英語的過程中，這些時態(tài)始終與我們形影不離，成為我們學(xué)習(xí)過程中的好朋友。
構(gòu)成：動詞原形或動詞的第三人稱單數(shù)形式.
(1)表示經(jīng)常性或習(xí)慣性的動作，常與 ften, usually, always, never, smetimes, every day, nce a mnth等時間狀語連用 (2)表示普遍存在的真理和客觀事實(3)表示按規(guī)定或時刻表將要發(fā)生的動作，僅限少數(shù)動詞(短語)，如 begin, cme, g, leave, start, arrive, end, return, take ff等(4)一般現(xiàn)在時用于描述主語的性格或能力等(5)在主從復(fù)合句中，當(dāng)描述將來的事情時，主句用將來時，條件狀語從句、時間狀語從句和讓步狀語從句用一般現(xiàn)在時代替一般將來時
1. I ften read bks in my spare time.2. Mary is gd at music. 3. He likes (like) playing basketball while his brther lves (lve) surfing the Internet.4. The earth mves arund the sun.5. Yu‘ll make great prgress if yu wrk hard！6. The train leaves at 7：25 this evening.
1. The earth ____________ (travel) arund the sun.2. I'll write t her when I ____________ (have) time.3. Time and tide ____________ (wait) fr n man.4. They always _____________ (care) fr each ther and help each ther.5. Tmrrw _____________ (be) Wednesday.
構(gòu)成：is/am/are＋現(xiàn)在分詞
(1) 現(xiàn)在進行時表示現(xiàn)在或目前一段時間內(nèi)正在進行的動作，常與 nw，at present，at this mment，these days，this week/mnth等時間狀語連用。(2) 現(xiàn)在進行時常與always，cntinually，cnstantly，frever等表示頻度的副詞連用，表示經(jīng)常、反復(fù)發(fā)生的動作，常含有厭煩、責(zé)備、憤怒、抱怨、贊揚等情感。(3) 現(xiàn)在進行時可以表示將來的動作，主要用于表示按計劃或安排要發(fā)生的動作。常與 cme，g，leave，depart，arrive，stay，start/begin，lecture，take ff等動詞(詞組)連用。
1. All the classmates are reviewing the lessn in the classrm nw.2. These days we are helping the farmers wrk n the farm.3. She is always thinking f thers instead f herself. 4. The by is cnstantly asking such silly questins. 5. Mr. Smith is leaving fr Nanjing tnight. 6. The meeting is beginning at three this afternn.
1. He _______________(wrk) n a paper nw.2. I __________________(meet) Mr. Wang tnight.3. She _____________________ (read) a handbk n gardening.4. The girl ______ always __________ (talk) lud in public.5. Technlgy _____ always _____________ (develp) very fast， s even the newest mdel will be ut f date sn.
am meeting
is reading
is talking
is develping
(1)一般過去時表示過去某一時刻或者某一段時間發(fā)生的動作或者狀態(tài)。常與then, at that time, just nw, a mment ag, the ther day, in the past, at ne time, three days ag, last year, yesterday, in 2019等時間狀語連用。(2)表示過去的習(xí)慣動作，常與ften, always, usually等表示頻度的時間狀語連用。(3)有些情況，雖然沒有明確表示過去的時間狀語，但可根據(jù)語境判斷出動作發(fā)生在過去，應(yīng)用過去時態(tài)。
Tm wanted t help us yesterday, but he was very busy.During his middle schl years, he played ftball nearly every day.Yur phne number again, please. I didn't quite catch it.
1. We ________(meet) her in the street yesterday.2. When he was yung, he ________ (take) cld baths regularly.3. I ______________(nt expect) t see yu studying at the library.4. He ________(buy) a watch but lst it.5. Pahlssn and her husband ________(search) the kitchen, checking every crner, but turned up nthing.
構(gòu)成：shall/will＋動詞原形，be ging t＋動詞原形，be(abut)t d sth.
(1)will＋動詞原形表示將要發(fā)生的動作或存在的狀態(tài)，常與tmrrw，next week, in the future, in a few days 等時間狀語連用。還可以表示說話時臨時做出的決定 (2)be ging t表示按計劃、打算要做某事，此外，還可以表示根據(jù)某些跡象判斷將要發(fā)生的事情。
didn't expect
1. As yu g thrugh this bk, yu will find that each f the millins f peple wh lived thrugh Wrld War Ⅱ had a different experience.2. I am ging t meet Mr. Smith at the airprt at 8：30 tnight.3. Lk at the black cluds! It is ging t rain.4. I was abut t g t have dinner when he called me up.5. We are t meet at the schl gate at six in the mrning.
(3)be abut t d表示即將發(fā)生的將來動作，該結(jié)構(gòu)不與表示具體的將來時間狀語連用，多與when連用。(4)be t d表示按照約定、職責(zé)、義務(wù)或要求等即將發(fā)生的動作。還可以表示打算做某事。
1. We ________(have) a meeting tmrrw.2. In a wrd, mass media ________(be) all the mre imprtant in the future and their functin will enrmusly expand.3. If yu ________ ________ ________ ________ a key cllege, yur English must be excellent.4. The summer hliday ________ ________. I'm ging t have a gd rest.
are t g t
is cming
構(gòu)成：have/has + 過去分詞.
(1)表示過去發(fā)生的動作對現(xiàn)在造成的影響或結(jié)果，著眼于現(xiàn)在。常與 already, Just (剛剛), yet, never, befre, lately, recently, in the last/past few years, up t nw, till nw, s far等連用(2)表示從過去某時開始而延續(xù)至今的動作或狀態(tài)，常與 fr＋一段時間， since＋時間點等表示一段時間的狀語連用。(3)在時間或條件狀語從句中，現(xiàn)在完成時可代替將來時 (4)在“This/It is the first/secnd ... time＋that從句”句式中，that從句一般用現(xiàn)在完成時
1. In the last few years, China has made great achievements in envirnmental prtectin.2. He has wrked here fr ver twenty years.3. He has lived in Lndn since 2018.4. We wn't start the wrk until all the preparatins have been made.5. This/It is the first time that I have visited the Great Wall.6. This is the mst interesting film that he has watched.
1. It is the mst instructive lecture that I ____________(attend) since I came t this schl.2. It is the first time that I ______________(be) t Beijing.3. One f ur number __________(make) a very interesting design f flring, which has wn a prize.4. My cusin ________ ________ ________ ________ fr a week. 5.He mved here in 2017 and he ________ ________ _________ ever since.
have attended
has been away hme
has lived here
構(gòu)成：had + 過去分詞.
(1) 句中含有by, by the end f, by the time, until, befre, since等后接表示過去某一時間的短語或從句時，句子常用過去完成時 (2) 表示未曾實現(xiàn)的希望、打算、意圖、諾言等，常用had hped/planned/meant/intended/thught/wanted/expected等或用上述動詞的過去式接不定式的完成式，即hped/planned ... ＋ t have dne (3) “時間名詞＋befre”在句中作狀語，謂語動詞用過去完成時；“時間名詞＋ag”在句中作狀語，謂語動詞用一般過去時 (4) 在hardly/scarcely ... when ... ，n sner ... than ... 句型中，主句常用過去完成時，表示“一……就……”。當(dāng)hardly, scarcely, n sner置于句首時，其后要用部分倒裝 (5) This/That/It was the first/secnd that ...(過去完成時)
1. By the end f last year, we had prduced 20，000 cars.2. We had planned t finish the wrk befre dark, but we were held up by a heavy rain. 3. Tm said his first teacher had left that schl at least 10 years befre.4. We had n sner been seated than the bus started.= N sner had we been seated than the bus started.5. This was the first time that Tm had climbed the Munt Tai.
1. The manager is said t have arrived back frm Paris where he ______________(meet) sme Eurpean business partners.2. Silk ______________(becme) ne f the primary gds traded alng the Silk Rad by abut 100 BC.3. This was the first time that I ___________________(experience) sandstrms and I dn't ever want t be in ne again.4. When walking dwn the street, I came acrss David, whm I ________________(nt see) fr years.
had experienced
hadn't seen

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