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1、Unit5 語法專項課件（過去進(jìn)行時）初中英語人教版八年級下冊 語 法 透 析考點大觀易錯辨析通關(guān)訓(xùn)練 考點大觀易錯辨析通關(guān)訓(xùn)練過去進(jìn)行時定義過去進(jìn)行時表示過去某一時刻或某一段時間內(nèi)正在進(jìn)行或發(fā)生的動作。 考點大觀易錯辨析通關(guān)訓(xùn)練過去進(jìn)行時的結(jié)構(gòu)否定形式問句 形式was/were + not + doing Was/Were+主語+doing was/were + doing He was sleeping at that time.He wasnt sleeping at that time.Was he sleeping at that time?肯定形式 考點大觀易錯辨析通關(guān)訓(xùn)練過去進(jìn)行

2、時標(biāo)志詞then, at that time, this time yesterday, at 5 oclock last night, all night, all the morning, from 7:00 to 9:00 yesterdayThey were having a class this time yesterday.I was drawing a horse when the teacher came in. 考點大觀易錯辨析通關(guān)訓(xùn)練動名詞變化規(guī)則口訣規(guī)則例子直1. 一般情況下，直接在動詞后加-ing。play playing去2. 動詞以不發(fā)音的-e結(jié)尾，要去-e加-in

3、g。take taking雙3.重讀閉音節(jié)的動詞，要雙寫詞尾字母，再加-ing。cut cutting變4. 以-ie結(jié)尾的動詞，把ie變成y再加-ing。lie - lying 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點1when的用法when和while引導(dǎo)時間狀語從句1. 狀語從句表示短時間的動作，主句常用進(jìn)行時態(tài)或完成時態(tài)。When I came in, he was reading the newspaper.非延續(xù)性動詞：come, go, leave, arrive, meet, die等。 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點1when的用法when和while引導(dǎo)時間狀語從句2. 狀語從句表示

4、長時間的動作或狀態(tài)，主句常用進(jìn)行時態(tài)。When she was making a call, I was writing a letter. 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點1when的用法when和while引導(dǎo)時間狀語從句3. 表示突然發(fā)生某事，意思是“正在時突然”，主句常用過去進(jìn)行時，when從句常用一般過去時。I was just coming along to see you when I ran into Wilson. 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點1while的用法when和while引導(dǎo)時間狀語從句1. 主句和從句都用一般過去時。She listened carefully w

5、hile he read.延續(xù)性動詞：read, study, sleep, write, listen, watch等。 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點1while的用法when和while引導(dǎo)時間狀語從句2. 從句用過去進(jìn)行時，主句用一般過去時。While I was watching TV, Tom came in. 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點1while的用法when和while引導(dǎo)時間狀語從句3. 主句和從句都用過去進(jìn)行時。While I was watching TV, she was doing some cleaning. 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點2用法不同過去進(jìn)行時

6、和一般過去時的區(qū)別過去進(jìn)行時一般過去時1. 表示動作在持續(xù)或未完成。1. 表示某一動作已經(jīng)完成。2. 表示動作反復(fù)地進(jìn)行。2. 表示只做一次動作。 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點2用法不同過去進(jìn)行時和一般過去時的區(qū)別She was writing a letter to her friend at eight last night.She wrote a letter to her friend last night. (信不一定寫完) (信寫完了) She waved to me. She was waving to me. （揮了揮手）（反復(fù)揮手） 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點2標(biāo)志詞不

7、同過去進(jìn)行時和一般過去時的區(qū)別過去進(jìn)行時一般過去時過去時間點：at that time, this time yesterday, at 7 oclock yesterday evening等。過去時間點：just now, yesterday, this morning, three years ago等。過去時間段：from six to nine yesterday, from morning till night, all those days等。過去時間段：in the past, in + 過去的年份, last week, once upon a time等。 考點大觀易錯辨析通

8、關(guān)訓(xùn)練易錯點2過去進(jìn)行時和一般過去時的區(qū)別We were having supper at this time yesterday.It was raining all those days.I was reading English while my mother was cooking breakfast.（過去進(jìn)行時） 考點大觀易錯辨析通關(guān)訓(xùn)練易錯點2過去進(jìn)行時和一般過去時的區(qū)別I lived in Beijing three years ago.The first Olympic Games happened in 1896.Anny used to be short, but she

9、 becomes taller now.（一般過去時） 考點大觀易錯辨析通關(guān)訓(xùn)練解 析【典例1】Little Tom _ computer games when his mother got home. A. is playing B. plays C. was playing D. playing考查時態(tài)。句意：當(dāng)媽媽到家的時候，小湯姆正在 玩電腦游戲。when引導(dǎo)時間狀語從句，主句多用進(jìn)行時，時間發(fā)生在過去，故用過去進(jìn)行時。 考點大觀易錯辨析通關(guān)訓(xùn)練解 析【典例2】 Turn off the water while you _ your teeth or washing your hand

10、s. A. were brushing B. brush C. are brushing D. brushed考查時態(tài)。句意：當(dāng)你刷牙或洗手的時候，請關(guān)掉水 龍頭。while引導(dǎo)時間狀語從句，時態(tài)保持一致，brushing與washing并列；習(xí)慣的動作，故選現(xiàn)在進(jìn)行時。 考點大觀易錯辨析通關(guān)訓(xùn)練解 析【典例3】I called you at 8:00 yesterday evening, but no one answered. Sorry, I _ clothes at that time. A. wash B. washed D. am washing D. was washing考查時態(tài)。句意：昨晚八點我打電話給你，但是沒有人接。不好意思，那個時候我正在洗衣服。at that time為過去進(jìn)行時標(biāo)志詞，選用was/were doing。