|
【小编寄语】今天英语网小编教给同学们的是小学生英语语法 since的用法小结，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。 过去完成时表示过去某一时间或某一动作之前已经发生或完成的动作，动作发生的时间是"过去的过去"。它是一个相对的时态,只有在和过去某个时间或动作相比较时才会用到. E.g. By the end of the match, they had kicked two goals. We had already had lunch before we arrived there. 其结构是"had+过去分词". | 
