while跟whereas有什么不同?使用上可以互通吗?

while跟whereas有什么不同?使用上可以互通吗?
while跟whereas有什么不同?使用上可以互通吗?

while跟whereas有什么不同?使用上可以互通吗?
如（3）His parents were rich,whereas mine had to struggle.（4）Many small birds use new sites for each nesting,whereas large birds often reuse the same nest.（5）Whereas it is day with us,it is night with the Americans.(=It is day with us,whereas it is night with the Americans.)应该注意的是whereas引导的从句与主句在意义上不仅是对立和相反的,而且也是并列的（因此也有人认为whereas是并列连词）,两者可以互换,无论主句在前,还是从句在前,其句意都不变.如（6）Old people in my country usually live with their children,whereas the old in the United States often live by themselves.(=Whereas old people in my country usually live with their children,the ole in the United States.) 即使主句和从句改变词序,其实际意义也大体相同.如：（7）They want a house,whereas we would rather live in a flat.(=Whereas we want a flat,they would rather live in a house.) 那么,whereas 与while可以换用吗?两者有何区别呢?同样,while也可意为：“（然）而,但是,反之”（but,whereas）,也可引出表示对比或相反情况的状语从句,相当于whereas,两者通常可以换用,但不如whereas正式,语气也不如whereas强,是普通用语,更为多用.如：（8）They spend all their money on their house,whereas(while) are prefer to spend ours on traveling.（9）While(Whereas) some newspapers have no advertising at all others carry many advertisements.与whereas一样,主句和从句之间通常也用逗号隔开,但也可不用.如（10）That region has plenty of natural resource while this one has none.同样,也有人将while看作并列连词.顺便说一下,whilst 与while 同义,但比while正式,尤其多用在英国英语中,如：（11）Raspberries have a matt ,spongy surface whilst blackberries have a taut ,shiny skin.最后,where作连词用时,也可意为：“（然）而,反之”（but,whereas）,引出表示对比或与主句意思相反的状语从句,相当于意思接近于whereas和while,但通常多用于口语,而whereas是正式用法,多用于书面语（但有时也可用于口语）.如句（７）中的whereas可换用where而意思不变.又如：（12）Some people spend their spare time reading,where others watch television.（13）She is very diligent,whereas(while ,where) he is very lazy.可见,你的老师所说是对的.值得注意的是whereas和while也可引出让步状语从句（adverbial clause of concession）,意为：“虽然,尽管”（although）,多位于句首,比较文气.如：（14）Whereas the amendment is enthusiastically supported by a large majority in the Senate,its fate is doubtful in the House.（15）While I admit that there are problems,I don’t agree that they cannot be solved.你的问题或可得到解决.whereas是教学大纲要求掌握的词汇,掌握其基本用法即可.
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