英语的几个问题.1.Never before has he failed to live up to what his parents expect of him more than it is today 这句话的意思是?2.-Have you been to the United States?- Yes,only once.I (stayed) there only for seven days 请问括号里可

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英语的几个问题.1.Never before has he failed to live up to what his parents expect of him more than it is today 这句话的意思是?2.-Have you been to the United States?- Yes,only once.I (stayed) there only for seven days 请问括号里可
英语的几个问题.
1.Never before has he failed to live up to what his parents expect of him more than it is today 这句话的意思是?
2.-Have you been to the United States?
- Yes,only once.I (stayed) there only for seven days
请问括号里可以用have stayed么,为什么?

英语的几个问题.1.Never before has he failed to live up to what his parents expect of him more than it is today 这句话的意思是?2.-Have you been to the United States?- Yes,only once.I (stayed) there only for seven days 请问括号里可
他从来没有比今天这样让他的父母更失望
第二题,如果你要用完成时的话,就应该是:I have been there only for seven days,必须用延续性动词,不能用瞬时性的