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说到since,我们最熟悉的用法或许就是since前面要用现在完成时。其实,since还有其他不同的用法,这些用法容易被大家忽略。下面从两个角度来说明since的用法:一是since后面的结构特点,二是since前面的修饰对象。请看下列表格。从以上表格我们看到,一方面,从since后面所跟的结构特点来看,可以分为三种情况:1.since后面接一个从句,此时since是连词。2.since后面接一个名词短语,此时since是介词。
When it comes to since, we are most familiar with the usage may be because the front to use now completed. In fact, since there are other different usage, these usage is easily overlooked by everyone. Here are two reasons to explain since usage: First, since the structural characteristics of the back, the second is since the front of the modified object. Please see the following form. From the above table we see, on the one hand, from behind the structural characteristics of the point of view, can be divided into three situations: 1.since followed by a clause, this time since is a conjunction. 2.since followed by a noun phrase, this time since is a preposition.