it be 时间 (since before after) 句子 怎样区别
在It is +时间+since从句的句型中,主句多用一般现在时。It’s … since …句型中的It指的是时间, 可以说It has been … since …, 但习惯上常说It’s … since …。 例如:
It is four years since my sister lived in Beijing。 我妹妹不在北京住有四年了。
It is five months since our boss was in Beijing。 我们老板离开北京有五个月了。
It’s half an hour since the film began。
电影开始有半小时了。
It’...全部
在It is +时间+since从句的句型中,主句多用一般现在时。It’s … since …句型中的It指的是时间, 可以说It has been … since …, 但习惯上常说It’s … since …。
例如:
It is four years since my sister lived in Beijing。 我妹妹不在北京住有四年了。
It is five months since our boss was in Beijing。
我们老板离开北京有五个月了。
It’s half an hour since the film began。
电影开始有半小时了。
It’s an hour since he fell asleep。
他睡着有一个小时了。
It’s three years since his father died。
他父亲去世有三年了。
It’s two months since he left home。
他离家已有两个月了。
It’s three days since he came back。
他回来已三天了。
相对而言,before,after的用法要简单一些:
It had been 5 years before I realized my dream。
(用过去完成时)=It took me 5 years to realize my dream。为实现梦想,我花去了5年时间。
It had been 5 years after I came back from Britain。
总觉得这里after好象不符合语言习惯,换成since将更通顺一些。收起