APP since表示“自从”。在since引起的句子里,动词要用过去时,而不能用现在时,主句则用完成时。例如,Since I came to London,I have made many friends.(自从我来到伦敦,结识了不少朋友。)I have had trouble with my car ever since I bought it.(自从我买了这辆车......（本文共 932 字） [阅读本文] >>
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since表示“自从”。在since引起的句子里,动词要用过去时,而不能用现在时,主句则用完成时。例如,Since I came to London,I have made many friends.(自从我来到伦敦,结识了不少朋友。)I have had trouble with my car ever since I bought it.(自从我买了这辆车......（本文共 932 字） [阅读本文] >>
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