have been abroad 不用TO,什么时候不用TO,什么时候要TO

Have you ever (been abroad)?为什么不用gone abroad或been to abroad? have been abroad 不用TO,什么时候不用TO,什么时候要TO 1,have you ever____?A,abroad B,go abroad c,going abroad D,been abroad Have you been abroad为什么abroad前不加to I have been abroad only ____(两次) I have never been abroad I have never been abroad.- ————空A so do i B so haven't i C neither am i D neither have i应该选那个?为什么? I have never been abroad .He has never been abroad,either.的同义句 i’ ve never been to abroad. 和i haven't ever been to abroad. 一样吗 that was the second time i had been abroad这一句中为什么不用I was abroad? 关于句型it is the first time that ...It will be the first time that I_____ abroad.A haven't been B will not have been 为什么? i have never been abroad before 这个before是什么词性 How many times have been abroad before.N____ His both parents have been abroad 这句话对吗 单句改错 He has said to have been born abroad. be,beenhe is said ____ abroad,but I don't know what country he studied in.have studied,不可以是to have been studying Robert is said abroad, but I don’t know in which country he is.A. have been studying B. to have been studying C. have studied D. to have studied have you ever been to go abroad的正确表达是怎么样的 have you ever been abroad.还是 have you ever been to abroad ,还是to go abroad 英语哦—Few people in his company have been abroad,__________ they?—Yes,most of them have ever worked in foreign countries.A.do B.don’t C.have D.haven’t