句子中when and while前后分别接什么词
来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/24 08:00:12
句子中when and while前后分别接什么词
1、when意为"在……时;当……时",可表示"点时间"或"段时间",从句谓语可以是终止性动词,也可以是延续性动词.例如:
When I got home,he was having supper.
The phone rang when I was doing my homework last night.
2、while只可表示"段时间",从句谓语只限于延续性动词.例如:
While I was sleeping,my father came in.
注:从句谓语是持续性动词时,when、while 可以互换
3、while意为“而”.“却”,表示对照关系.例如:Instead,he asked his father why he was not able to hatch chickens while hens could.他反而问他父亲,为什么他不能孵出小鸡,而母鸡却能孵出小鸡.
When I got home,he was having supper.
The phone rang when I was doing my homework last night.
2、while只可表示"段时间",从句谓语只限于延续性动词.例如:
While I was sleeping,my father came in.
注:从句谓语是持续性动词时,when、while 可以互换
3、while意为“而”.“却”,表示对照关系.例如:Instead,he asked his father why he was not able to hatch chickens while hens could.他反而问他父亲,为什么他不能孵出小鸡,而母鸡却能孵出小鸡.
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