翻译英语句子：现在完成时 do it yourself
我去过上海两次。 用英语怎么说 I have been to shanghai twice
英语翻译 1.Have you had your breakfast yet？Yes，I have.2.Has he finished his homework yet？No，he hasn't.3.Have they been to Beijing yet？Yes，they have been to Beijing twice.4.How long has Marry been in Shanghai？So far he has been in Shanghai for two months.5.How many words have you learnt so far？I've already learnt 1600 words so far.
