Unit5語法專項課件過去進行時

1、Unit5 語法專項課件語法專項課件（過去進行時）（過去進行時）初中英語人教版八年級下冊初中英語人教版八年級下冊語法透析語法透析考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練過去進行時表示過去某一時刻或某一段時間內(nèi)正在進行或發(fā)生的動作?？键c大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練否定形式問句形式was/were + not + doing Was/Were+主語+doing was/were + doingHe was sleeping at that time.He wasnt sleeping at that time.Was he s

2、leeping at that time?肯定形式考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練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.考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練口訣口訣規(guī)則規(guī)則例子例子直1.

3、 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-ing。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考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練when的用法when和while引導時間狀語從句1. 狀語從句表示短時間的動作，主句常用進行時態(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,

4、 meet, die等?？键c大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練when的用法when和while引導時間狀語從句2. 狀語從句表示長時間的動作或狀態(tài)，主句常用進行時態(tài)。When she was making a call, I was writing a letter.考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練when的用法when和while引導時間狀語從句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.考點大觀考點

5、大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練while的用法when和while引導時間狀語從句1. 主句和從句都用一般過去時。She listened carefully while he read.延續(xù)性動詞：read, study, sleep, write, listen, watch等。考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練while的用法when和while引導時間狀語從句2. 從句用過去進行時，主句用一般過去時。While I was watching TV, Tom came in.考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練while的用法when和while引導時間狀

6、語從句3. 主句和從句都用過去進行時。While I was watching TV, she was doing some cleaning.考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練用法不同過去進行時和一般過去時的區(qū)別過去進行時過去進行時一般過去時一般過去時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. 表示動作反復地進行。2. 表示只做一次動作。考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練用法不同過去進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

7、 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）（反復揮手）考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練標志詞不同過去進行時和一般過去時的區(qū)別過去進行時過去進行時一般過去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：

8、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?？键c大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練過去進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 breakfas

9、t.（過去進行時）考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練過去進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 becomes taller now.（一般過去時）考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練解析解析【典例1】Little Tom _ computer games when his mother got home. A. is playing B. plays C. was pla

10、ying D. playing考查時態(tài)。句意：當媽媽到家的時候，小湯姆正在玩電腦游戲。when引導時間狀語從句，主句多用進行時，時間發(fā)生在過去，故用過去進行時。考點大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練解析解析【典例2】 Turn off the water while you _ your teeth or washing your hands. A. were brushing B. brush C. are brushing D. brushed考查時態(tài)。句意：當你刷牙或洗手的時候，請關(guān)掉水龍頭。while引導時間狀語從句，時態(tài)保持一致，brushing與washing并列；習慣的動作，故選現(xiàn)在進行時?？键c大觀考點大觀易錯辨析易錯辨析通關(guān)訓練通關(guān)訓練解析解析【典例3】I called you at 8:00 yesterday evening, but no one answere