for three months前面加have还是do

for three months前面加have还是do for three months用什么提问 I have studied English for three months. Know you for three months是什么意思 Kate has been making a film for three months.针对 for three months划线提问. three months is a long for me ,three months 是复数,为什么有要看成整体 in three months 与 for three months区别they will have the final exam ____ theree months for more than three months用什么提问 I have been here for three months.同义句 i have been here for three months同义句 I r( ) this room for about three months. I've been here for three months的同义句 Spring____(begin)in march and it____(last)for three months Edison was at school for only three months...Edison was at school for only three months（对for only three months 提问)还有一个疑问..如果这里是对only three months 提问呢? 可以告诉我months,years,ages,前面用for还是since? 为什么how long提问,答语前面要加for—How long have you lived in China?—For about three years.为什么答语前面用for啊? the three fish 前面为什么加the first three months