1.be done和have/has/had been done之间区别!请举例!2.表转折时while与but用法区别最好举例
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![1.be done和have/has/had been done之间区别!请举例!2.表转折时while与but用法区别最好举例](/uploads/image/z/4263372-36-2.jpg?t=1.be+done%E5%92%8Chave%2Fhas%2Fhad+been+done%E4%B9%8B%E9%97%B4%E5%8C%BA%E5%88%AB%21%E8%AF%B7%E4%B8%BE%E4%BE%8B%212.%E8%A1%A8%E8%BD%AC%E6%8A%98%E6%97%B6while%E4%B8%8Ebut%E7%94%A8%E6%B3%95%E5%8C%BA%E5%88%AB%E6%9C%80%E5%A5%BD%E4%B8%BE%E4%BE%8B)
1.be done和have/has/had been done之间区别!请举例!2.表转折时while与but用法区别最好举例
1.be done和have/has/had been done之间区别!请举例!2.表转折时while与but用法区别最好举例
1.be done和have/has/had been done之间区别!请举例!2.表转折时while与but用法区别最好举例
1)be done可以是is done/was done/were done,这表示动词的一般现在式和一般过去式的被动语态,例如:The cup was broken by a child.由主动句A boy broke a cup变来的.
have/has/had been done表示现在完成式和过去完成式的被动语态,例如:The film has been seen by all the students in our class.由主动句All the student in our class have seen the film变来的.
2)while可以作为连词表示转折,但要清楚一点,由while连接的两个句子前后的语义形成的对比,而不是强烈的转折.例如:
Ilike coffee while you prefer tea.
从上面的句子中可以发现,while前后连接的两个句子语义是相反的,前后形成对比.
而but前后两句话是强烈的转折.如:
ilike coffee,but i can't have it now since i am afraid i am not able to fall asleep.
从上面的句子可以发现,but连接的两个句子是强烈转折的.