第1个回答 2007-06-01
看例句辨别用法吧:
when i was a little girl, i'd like to ask questions.
我当小的时候,我喜欢问问题.
when necessary, ask the teacher for help.
然后有必要的话,向老师求助.
i was wondering in the street, when i caught sight of a tailor's shop. 我在街上走着走着,就在这时,我看见了了一家裁缝店
i was about to leave, the telephone rang.
我正准备离开,这时候电话铃响了
i worked in that factory before i came here.
我来这之前在那工厂工作.
last midnight, the telephone rang me up. but before i got it, it rang off.昨天半夜我被电话零吵醒了,可不等我去接又挂断了
it'll not be long before he comes back. 他很快就会回来的