《時間狀語從句》PPT課件.ppt

Adverbial Clauses,條件狀語,原因狀語,目的狀語,地點(diǎn)狀語,比較狀語,結(jié)果狀語,時間狀語,讓步狀語,方式狀語,掌握狀語從句的關(guān)鍵,1.準(zhǔn)確掌握每一個連詞的含義。 2.注意主句和從句的時態(tài)呼應(yīng)。,Adverbial clauses of time,(1) as , while , when,Which do you choose? Im going to the post office. _ you are there, can you buy me some stamps? AAs Bwhile CBecause DIf,While ,when 在句中的不同含義: While I was walking down the street, I came across an old friend. ( while=_) While I really dont like art, I find his work impressive. ( while =_ ) He likes pop music, while I am fond of folk music. Strike while iron is hot.,They were walking down the street when they saw an accident. 2) I had just got home when it began to rain. 3) I was about to go swimming when our guide stopped me. 4) Its cold when it snows.,As I left the house, I forgot the key. 2. As I get older, I get more optimistic. 3. He looked behind as he went. 4. As the weather is so bad, we have to stay home. 5. You can do it as you like. 6. Old as he is, he is still energetic.,Judge the meanings of “as”.,Fill in the blanks with “when, while, as” 1_ you meet a word you dont know, consult the dictionary. 2.The students took notes _ they listened. 3._ the wind rose ,the noise increased. 4.She called _ I was out. 5.We must strike _ the iron is hot. 6._you have finished your work, you may have a rest. 7. I was just reading a book _ she came into my room.,when,as,As,while,while,When,when,before用法 1.We had sailed four days and four nights before we saw land. 2. We hadnt run a mile before he felt tired. 3. Please write it down before you forget it. 4. Before I could get in a word, he had measured me.,注意：before從句中謂語不用否定式。 Before they reached the station, the train had gone.,才,還沒有/不到就,趁（還未）,還沒來得及,含有before的句型結(jié)構(gòu)： 1. It will be / was一段時間before“過多久才” It_(還要過兩年)he leaves the country. It _(過了很長一段時間) before he got to sleep again. 2. It will be / was + not一段時間before “不多久就” It wasnt two years before he left the country. It was not long before he came back.,Since用法 1.I have returned home four times since I came here. 2. She has been working here (ever since) he left school. 常用句型：It has been (is) + 時間段 + since從句 “自從有多長時間了 ” 畢業(yè)已經(jīng)有六年時間了。 It has been (is) six years since she graduated from the university.,（2）引導(dǎo)時間狀語從句的連接詞除上述外還有： till, until, Dont get off the bus until it has stopped. He waited for his father until (till) it was twelve oclock. once, as soon as, directly, immediately, As soon as I have finished it , Ill give you a call. Once you show any fear, he will attack you. He made for the door directly he heard the knock. the moment, the minute ,the second 一就 hardly / scarcely when, no sooner than表示“一就 We had hardly got into the country when it began to rain. He had no sooner arrived than she started complaining. each time, every time, the first time, by the time Each time he came to my city, he would call on me. The first time I came to Shanghai, I loved it very much. By the time the doctor arrived ,the man had come to.,連接詞：because, as, since, now that, for,e.g. He didnt come to school because he was ill.,表示“直接”原因。,c.f. He might be ill, for he d