初二英語現(xiàn)在進(jìn)行時(shí)和過去進(jìn)行時(shí)語法知識(shí)點(diǎn)

　　初中三年我們要英語單詞，作文，語法。其中語法是比較重要和比較復(fù)雜不易理解的，今天小編為大家準(zhǔn)備了“初二英語現(xiàn)在進(jìn)行時(shí)和過去進(jìn)行時(shí)語法知識(shí)點(diǎn)”，拆分知識(shí)點(diǎn)，然后再串聯(lián)，幫助大家形成健全知識(shí)體系，拿下初二英語動(dòng)詞語法知識(shí)!

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　　I am watching TV now.

　　我正在看電視。

　　句型：主語+be(am，is，are)+現(xiàn)在分詞～.

　　Look!Nancy is doing her homework

　　看!南希正在做功課。

　　They are cleaning their classroom.

　　他們正在打掃他們的教室。

　　She isn't reading now.

　　過去進(jìn)行時(shí)

　　He was walking in the park at that time yesterday

　　昨天那個(gè)時(shí)候，他正在公園散步。

　　句型：主語+be(was，were)+現(xiàn)在分詞～.

　　I was watching TV then.

　　那時(shí)，我正在看電視。

　　When I came home， they were cooking in the kitchen.

　　當(dāng)我進(jìn)家時(shí)，他們正在廚房里做飯。

　　When he knocked at the door， we weren't doing our homework.

　　當(dāng)他敲門時(shí)，我們沒有在寫功課。

　　Were you cooking at that time?

　　那時(shí)，你在做飯嗎?

　　現(xiàn)在進(jìn)行時(shí)的用法： 其結(jié)構(gòu)是助動(dòng)詞be的過去形式is/are/am +v-ing.

　　其句式變化仍然要在be上做文章。

　　現(xiàn)在(說話的瞬間)正在進(jìn)行或發(fā)生的動(dòng)作，強(qiáng)調(diào)“此時(shí)此刻”。E.g. He is reading . They are talking now.

　　2、當(dāng)前一段時(shí)間內(nèi)的活動(dòng)或現(xiàn)階段正在進(jìn)行的動(dòng)作。E.g. They are working these days.

　　3、某些動(dòng)詞的現(xiàn)在進(jìn)行時(shí)，表預(yù)定的計(jì)劃或即將發(fā)生的動(dòng)作。E.g I am coming.

　　其結(jié)構(gòu)為be+現(xiàn)在分詞. 現(xiàn)在分詞的變法有

　　1、一般在動(dòng)詞詞尾加上-ing ,E.g. jump

　　2、以不發(fā)音字母e結(jié)尾的動(dòng)詞，先去e，再加-ing. E.g have write

　　3、.以重讀閉音節(jié)末尾只有一個(gè)輔音字母結(jié)尾的詞，它前面是單個(gè)元音字母時(shí)要先將詞尾的輔音字母雙寫，再加上-ing. E.g. sit put

　　其句式變換都在be上做文章。

　　E.g. He is buying a bike.

　　Is he buying a bike?

　　He isn’t buying a bike.

　　一般由look,listen,now, at this moment等時(shí)間狀語做標(biāo)志。

　　4. 習(xí)慣進(jìn)行：表示長期的或重復(fù)性的動(dòng)作，說話時(shí)動(dòng)作未必正在進(jìn)行。

　　Mr. Green is writing another novel.

　　(說話時(shí)并未在寫，只處于寫作的狀態(tài)。)

　　She is learning piano under Mr. Smith.

　　5. 表示漸變的動(dòng)詞有：get, grow, become, turn, run, go, begin等。

　　The leaves are turning red.

　　It's getting warmer and warmer.

　　6.與always, constantly, forever 等詞連用，表示反復(fù)發(fā)生的動(dòng)作或持續(xù)存在的狀態(tài)，往往帶有說話人的主觀色彩。

　　You are always changing your mind.

　　典型例題

　　My dictionary ___, I have looked for it everywhere but still___ it.

　　A. has lost, don't find　　 B. is missing, don't find　C. has lost, haven't found　 D. is missing, haven't found.

　　答案D. 前句是一個(gè)仍在持續(xù)的狀態(tài)，應(yīng)用進(jìn)行時(shí)，由于沒有找到，其影響仍然存在，應(yīng)用完成時(shí)，瞬間動(dòng)詞用于否定式時(shí)可用于完成時(shí)。

　　不用進(jìn)行時(shí)的動(dòng)詞

　　1) 事實(shí)狀態(tài)的動(dòng)詞

　　have, belong, possess, cost, owe, exist, include, contain, matter, weigh, measure, continue

　　I have two brothers.

　　This house belongs to my sister.

　　2) 心理狀態(tài)的動(dòng)詞

　　Know, realize, think see, believe, suppose, imagine, agree, recognize, remember, want, need, forget, prefer, mean, understand, love, hate

　　I need your help.

　　He loves her very much.

　　3 ) 瞬間動(dòng)詞