He came here before two hours.这句话哪里有错?

坐等He came here before there days. he came here two hours before 改错 He English for five years before he came here how long _______ he__________London before he came here? He came here before two hours.这句话哪里有错? He had studied English for a year before he came here 其中的before能不能换成when? He's never been here before,_____he?-_____.He came here three years ago.填什么?（反意疑问句） 请麻烦翻译一下It's ten days before he came here. It was another year before he come here.为什么用come 不用came before I came here,I___(have)breakfast Where_____you______(study)before you came here? He came here a year _______,and I have been here _______ two years.A before,in B ago,for C before,forC是错的 Have you got any explanation to the question_ he came here for the day before yesterdayHave you got any explanation to the question____ he came here for the day before yesterday.A.why B.what C.how D.which It was three years before he came He came here yesterday.对yesterday提问 1.He came here last month. What did Mr green do before he came here He ---a taxi for more than ten years.A.droveB.has driven Did he tell you __ he came here for the day before yesterday?A.when B.why C.what D.which