关于情态动词语法,语法书有个地方写need常用于疑问和否定句,在肯定句中用must,have to ,ought to ,should但语法书有个地方介绍MUST的时候,有个句子MUST I BE HOME BEFORE TEN O'CLOCK?这不就是疑问句吗?为什
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![关于情态动词语法,语法书有个地方写need常用于疑问和否定句,在肯定句中用must,have to ,ought to ,should但语法书有个地方介绍MUST的时候,有个句子MUST I BE HOME BEFORE TEN O'CLOCK?这不就是疑问句吗?为什](/uploads/image/z/12113564-68-4.jpg?t=%E5%85%B3%E4%BA%8E%E6%83%85%E6%80%81%E5%8A%A8%E8%AF%8D%E8%AF%AD%E6%B3%95%2C%E8%AF%AD%E6%B3%95%E4%B9%A6%E6%9C%89%E4%B8%AA%E5%9C%B0%E6%96%B9%E5%86%99need%E5%B8%B8%E7%94%A8%E4%BA%8E%E7%96%91%E9%97%AE%E5%92%8C%E5%90%A6%E5%AE%9A%E5%8F%A5%2C%E5%9C%A8%E8%82%AF%E5%AE%9A%E5%8F%A5%E4%B8%AD%E7%94%A8must%2Chave+to+%2Cought+to+%2Cshould%E4%BD%86%E8%AF%AD%E6%B3%95%E4%B9%A6%E6%9C%89%E4%B8%AA%E5%9C%B0%E6%96%B9%E4%BB%8B%E7%BB%8DMUST%E7%9A%84%E6%97%B6%E5%80%99%2C%E6%9C%89%E4%B8%AA%E5%8F%A5%E5%AD%90MUST+I+BE+HOME+BEFORE+TEN+O%27CLOCK%3F%E8%BF%99%E4%B8%8D%E5%B0%B1%E6%98%AF%E7%96%91%E9%97%AE%E5%8F%A5%E5%90%97%3F%E4%B8%BA%E4%BB%80)
关于情态动词语法,语法书有个地方写need常用于疑问和否定句,在肯定句中用must,have to ,ought to ,should但语法书有个地方介绍MUST的时候,有个句子MUST I BE HOME BEFORE TEN O'CLOCK?这不就是疑问句吗?为什
关于情态动词语法,
语法书有个地方写need常用于疑问和否定句,在肯定句中用must,have to ,ought to ,should
但语法书有个地方介绍MUST的时候,有个句子MUST I BE HOME BEFORE TEN O'CLOCK?这不就是疑问句吗?为什么上面又说 need常用于疑问和否定句,按道理这是疑问句应该用need啊
到底是句子错了还是语法错了,
关于情态动词语法,语法书有个地方写need常用于疑问和否定句,在肯定句中用must,have to ,ought to ,should但语法书有个地方介绍MUST的时候,有个句子MUST I BE HOME BEFORE TEN O'CLOCK?这不就是疑问句吗?为什
你的理解没有错.书上语法也没有错.must和need在必须意义上是一对.即肯定句用must do,否定句疑问句用need...do?needn't do...当然,must也可以直接提前构成疑问.但否定则必须使用needn't do了.此时need无三单和过去式变化.
I must be home before ten o'clock.
Must i be home before ten o'clock?yes,you must.no,you needn't.
Need i be home before ten o'clock?yes,you must.no,you needn't.
当need用于肯定句时,常可解释为需要,而不是必须.此时成为普通的实义动词.拥有三单和过去式变化了.但是不能再提前构成疑问,也不能+not构成否定了.要借助do了.
I need a book.Do you need a book yes,I do.No,i don't.
I need to have a rest.Do you need to have a rest Yes,i do.No,i don't.
your sock needs mending.Does your sock need mending Yes,it does.No,it doesn't.
He needed a book last night.Did he need a book last night yes,he did.No,he didn't.
need常用于疑问和否定句,并不是说它就不可以用在肯定句中,need可以用在肯定句当中,同样,must也可用在疑问句当中否定句当中。
在语法书上,他说一个单词常用于某个句式当中,并不代表其它单词就不能用进去!
这个句子没有错,其意思是我必须在十点钟之前回家吗,这里must可以用在疑问句中。英语中有很多东西不是绝对的,要记住一些特例会对学习有帮助