i must have watched 和 i must have been watch TV意思一样吗 为什么

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• 语法题高中的don't bother me.do what you(will);i don't care.为什么不用would likeit has been suggested that people who watch television incessantly(may become)over passive.为什么不用should becomethey (may have arrived )home by now.let's telephone them again.为什么不用must arrivedavid is waiting alone in the waiting-room.you(ought to have told)him yesterday about the change.为什么不用ought to tell(can)anybody else give correct answers to these questions?为什么不用musthe told me i (mig
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• i must have watched 和 i must have been watch TV意思一样吗 为什么
• 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,
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