as-when和while的区别PPT课件
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A. though B. as C. while D. For
3. （2007重庆） ___D___ ，his idea was accepted by
all the people at the meeting.
A. Strange as might it sound B. As it might sound strange C. As strange it might sound D. Strange as it might sound
3
5. as 还可以表示原因（because,for） I didn’t visit U as I know you were not at home 6.还可以用于倒装结构中，表示尽管… 形、副词+as+主+谓，主句 名词(前不加冠词)+as+主+谓，主句
Young as he is, he knows a lot. Child as he is, he knows a lot.
5
4.（2006广东）Jenny was very sad over the loss of
the photos she had shot at Canada， ____A____this
was a memory she especially treasured.
A. as B. if C. when D. Where 5. （2006湖南）I had just stepped out of the bathroom and was busily drying myself with a
4
1.（2007山东）___D____I really don’t like art， I find
his work impressive. A. As B. Since C. If D. While
2. （2007四川）I’d like to study law at university
____C____my cousin prefers geography.
stamps?
A. As B. when C. while D. If
6
1
②when 说明从句的动作和主句的动作可以是同时， 也可以是先后发生；
as,while 则是同时发生。
When /While /As she was making a phone call， I was writing a letter.
Strike the iron while it is hot.
Tom was disappointed that most of the guests had left when he arrived in the party.
2
③when和while 还可作连词。 when表示“在那时(突然)”常用句型 be doing when be about to do when I was eating with my wife and children when we heard a loud noise
While可表示“而，却”，表对比。 He likes her while she likes him.
④as常表示“随着……”；“一边……，一边……” As autumn approaches, it is getting colder. The little girls sang as they went.
towel ___B_____I heard the steps.
A. while B. when C. since D. after 6. （哪个不对）---I’m going to the post office.
---__D__ some
When，as和while的区别
①when/as是at or during the time that, 既指时间点， 也可指一段时间；
• while是during the time that，只指一段时间。 • when/as引导的时间状语从句中的动词可以是终止性
动词，也可以是延续性动词， 而while从句中的动词必须是延续性动词。 Sorry, I was out when(as) you called me. He can write only when(as/while) the baby is asleep
3. （2007重庆） ___D___ ，his idea was accepted by
all the people at the meeting.
A. Strange as might it sound B. As it might sound strange C. As strange it might sound D. Strange as it might sound
3
5. as 还可以表示原因（because,for） I didn’t visit U as I know you were not at home 6.还可以用于倒装结构中，表示尽管… 形、副词+as+主+谓，主句 名词(前不加冠词)+as+主+谓，主句
Young as he is, he knows a lot. Child as he is, he knows a lot.
5
4.（2006广东）Jenny was very sad over the loss of
the photos she had shot at Canada， ____A____this
was a memory she especially treasured.
A. as B. if C. when D. Where 5. （2006湖南）I had just stepped out of the bathroom and was busily drying myself with a
4
1.（2007山东）___D____I really don’t like art， I find
his work impressive. A. As B. Since C. If D. While
2. （2007四川）I’d like to study law at university
____C____my cousin prefers geography.
stamps?
A. As B. when C. while D. If
6
1
②when 说明从句的动作和主句的动作可以是同时， 也可以是先后发生；
as,while 则是同时发生。
When /While /As she was making a phone call， I was writing a letter.
Strike the iron while it is hot.
Tom was disappointed that most of the guests had left when he arrived in the party.
2
③when和while 还可作连词。 when表示“在那时(突然)”常用句型 be doing when be about to do when I was eating with my wife and children when we heard a loud noise
While可表示“而，却”，表对比。 He likes her while she likes him.
④as常表示“随着……”；“一边……，一边……” As autumn approaches, it is getting colder. The little girls sang as they went.
towel ___B_____I heard the steps.
A. while B. when C. since D. after 6. （哪个不对）---I’m going to the post office.
---__D__ some
When，as和while的区别
①when/as是at or during the time that, 既指时间点， 也可指一段时间；
• while是during the time that，只指一段时间。 • when/as引导的时间状语从句中的动词可以是终止性
动词，也可以是延续性动词， 而while从句中的动词必须是延续性动词。 Sorry, I was out when(as) you called me. He can write only when(as/while) the baby is asleep