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【小编寄语】今天英语网小编教给同学们的是小升初语法必备 since的用法及练习题，一起来学习下吧!祝同学们学习进步! since的四种用法(***) 1)since +过去一个时间点(如具体的年、月、日期、钟点、1980, last month, half past six)。例如： I have been here since 1989. 1989起，我一直在这儿。 2)since +一段时间+ ago。例如： I have been here since five months ago. 我在这儿，已经有五个月了。 3)since +从句。例如： Great changes have taken place since you left. 你走后，变化可大了。 Great changes have taken place since we were here. 我们走后，变化可大了。 4)It is +一段时间+ since从句。例如： It is two years since I became a postgraduate student. 我考上研究生有两年了。 历年真题： 1. He has ____ the army for ten years and now is an officer. A.gone into B.joined in C.been in D.come into 答案：C.(其余三组动词均为瞬间动词，不能和段时间连用。) 2. You don't have to describe her. I _____ her several times. | 
