副热带高压目前位置:这个句子为什么前面用过去时,后面用进行时she watched TV while she was washing her clothes. Thanks!

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这个句子为什么前面用过去时,后面用进行时she watched TV while she was washing her clothes. Thanks!
悬赏分:0 - 离问题结束还有12 天 11 小时

问题补充:Mary watched TV while she ate her supper.
While John was sitting biting his nails, I was working out a plan to get us home.那为什么我有见过这样的两个句子,前后时态又和she watched TV while she was washing her clothes.不一样呢,谢谢!
she watched TV while she was washing her clothes.能否说成
she was watching TV while she was washing her clothes.

she watched TV while she was washing her clothes.
如果这里面的she代表同一个人,那么也可以说成
she watched TV while washing her clothes.中间相同的部分可以省略.
       引导状语从句
  ①while有时=when ,翻译成 当~的时候;和~同时
my wife kept silent while I was writing.
  ②while=although,翻译成  虽然;尽管
while (he was) respected,he was not liked.
  ③while同as long as, 翻译成 只要
There will be life while there is water and air.
④while同whereas(表示对比)=but,翻译成 然而
He is a worker while I am a docter.
注意:while 从句动词须能延续
误:Somebody broke in while we went out.
正:Somebody broke in while we were out.

这个句子为什么前面用过去时,后面用进行时
she watched TV while she was washing her clothes.
while conj.引导一个时间状语从句,表她在洗衣服的过程中也在看电视。
你也可以说:She washed her clothes while she was watching TV.
因为主句和从句中的两个动作wash和watch都为延续性动词。再如:
He knocked the door while I was cooking.
说成:I cooked while he was knocking.就不太好了。
while conj.后一般应跟延续性动词。
when conj.后一般可跟延续性动词也可跟短暂性动词。
所以上句也可以用when替换while.

同时注意:while 引导的时间状语在表时间、伴随的基础上更侧重,两个动作的比较、对比。
如:While I was wathching,my sister is doing homework.
对比两个动作,上句强调我不应在学习时间看电视。

这个句子为什么前面用过去时,后面用进行时she watched TV while she was washing her clothes.
这里讲究的是句子的含义,”她看电视“而此时“她正在洗衣服”。同样,你也可以反过来。
后面的While John was sitting biting his nails, I was working out a plan to get us home.虽然和上面的不同,可是在含义上同样无懈可击,意思是“当john在咬指甲的时候,我在……”
有时候不要太刻意执着于语法,可以根据语境和句子想要表达的意思来判断,毕竟,英语主要是用来说的,让人理解才是第一位。

while

n.
一会儿, 时间
conj.
当...的时候, 虽然
vt.
消磨
prep.
<古><方>直到

问题补充中第一例子中的while做prep.讲,所以用过去时,你把词性搞懂,再结合场景分析就明白了

第二例子中看be动词是过去室,后跟分词,前后2句事态必须一致,所以判定他是过去进行时

第三离子中的while在这里做conj.讲 所用的时态是过去进行时 也就是be动词用过去时 后面跟分词(+ing)

watched用过去时表示说话人强调“看”这个动作
washing 用进行时表示做“看”这个动作的时间,如改成She was watching TV while she was washing clothes.可能引起歧义,“她”可能是俩个不同的人

当一个动词在句子中作形容词修饰前面的动词时,就要加ing.跟进行时没有关系.