八年级英语下现在完成时

八年级英语下现在完成时内容摘要：

ears have passed since he left here. 以上三种表示方法适用于所有瞬间动词。 另外，还可用其它表示方法，但只适用于部分瞬间动词。 具体办法是将瞬间动词转化为表延续的动词或者表状态的 be+名词／形容词或副词／介词短语等。 buy catch (get) a cold borrow e/go /bee have have a cold keep be be+名词 join the army join the Party go to school be a soldier be a Party member be a student 3转换成 be+形容词或副词 die finish begin leave fall sleep close open be dead be over be on be away be asleep be closed be open be+介词短语 go to school join the army ① .我们买这本书三年了 . We have had the book for three years. ② 他感冒三天了 . He has had a cold for three days. We bought the book three years ago. He caught a cold three days ago. 一般过去时态和现在完成时态可以构成同义句 be in school be in the army ③ 自从上星期以来 ,我就借了这本书 . I have kept the book since last week. ④ 我成为一个学生两年多了 . I have been a student for over two years. I borrowed the book last week. I became a student two years ago. ⑤ Mr Black死了三年了。 Mr Black has been dead for three years. Mr Black died three years ago. ⑥ 小明参。