時(shí)間狀語從句ppt課件

1、1 Adverbial Clauses23連接詞類別作 用例 句asas 表示“當(dāng)?shù)臅r(shí)候”，往往和 when/ while 通用，但它著重強(qiáng)調(diào)主句與從句的動作或事情同時(shí)或幾乎同時(shí)發(fā)生。1.She came up as I was cooking.（同時(shí)）2.The runners started as the gun went off.（幾乎同時(shí)）whenwhen可以和延續(xù)性動詞連用，也可以和短暫性動詞連用；when從句的謂語動詞可以在主句謂語動作之前、之后或同時(shí)發(fā)生；while和as從句的謂語動作必須是和主句謂語動作同時(shí)發(fā)生。 1.When we were at school, we wen

2、t to the library every day.（在一段時(shí)間內(nèi)）2.Sorry，I was out when you called me（call為短暫性動詞）對不起，你打電話時(shí)我剛好外出了。 3. When I got to the airport，the guests had left（got to后發(fā)生）當(dāng)我趕到飛機(jī)場時(shí)，客人們已經(jīng)離開了。 while從句動作和主句動作同時(shí)發(fā)生，且從句動作為延續(xù)性動詞時(shí)，(when，while，as都可使用)。 主句中的動作或事情是在從句中的動作或事情的進(jìn)展過程中發(fā)生，從句中的動詞一般要用延續(xù)性動詞。1.When While As we were

3、dancing，a stranger came in（dance為延續(xù)性動詞）。2.Please dont talk so loud while others are working. 4(1) as , while , when(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 5While ,when While ,when 在句中的不同含義:While I was w

4、alking down the street, I came across an old friend. While I really dont like art, I find his work impressive. 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.I had just got home when it began to rain.I was about to go swimming when our guide stopped me.Its cold when it snows.6 Fill in the blanks with “when, while” _ you meet a word you dont know, consult the dictionary. .She called _ I was out. We must strike _ the iron is hot. _you have finished your work, you may have a re