初中英语 状语从句 全部 以及时态 最好有例句。

2024-12-28 18:09:47
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英语时间状语从句讲解与练习 引导时间状语从句的普通类从属连词有when(当……时),while(在……期间),as(当……,一边……一边……),before(在……之前),after(在……之后),since(从……以来),till/until(直到),whenever(无论何时),as soon as(一……就)等。如: When I went into the classroom, he was reading. 当我走进教室时,他正在看书。 He read a newspaper as he went along. 他边走边看报纸。
We must strike while the iron is hot. 我们必须趁热打铁。
I will tell you after they leave. 等他们走后我再告诉你。
I told him to come back whenever he wants to. 我告诉他什么时候想回来就回来。 I waited till/until she was back. 我一直等到她回来。
Once time is gone, you will never get it back. 时间一旦失去就再也得不到了
注意:在时间状语从句中,不能用一般将来时、过去将来时态或将来完成时,而要用相应的一般现在时态、一般过去时或现在完成时来代替。如:
I’ll telephone you as soon as I get there. 我一到达那里就打电话给你。
She said she would phone me as soon as she got there. 她说她一到达那里就给我电话。
Don’t get off the bus until it has stopped. 等车停稳后才下车。
when, while 和 as 引导时间状语从句的用法
这三个词的意思很简单,都有“当……时候”的意思。但学生经常会问三个词的区别在哪儿,特别是在做选择题的时候。别说是学生,就我个人而言,做这样的选择题要保证百分之百的正确也是不可能的。现根据大量的实例和个人的思考,做一点小结,供大家参考。
一、when 的用法
如果只从现象来看,when 从句用的最多的是一般过去时,而主句的时态没有限制,根据具体情况而定。
1. When he was a child he was always trying out new ideas.
他小时候就常常试验一些新的设想。
2. When she came into my room, I was just reading a book. 她走进我房间时,我正在看书。
3. Were you writing when the teacher came in? 老师进来的时候,你在写信吗?
4. Sorry, I was out when you called me. 对不起,你打电话来的时候我出去了。
5. He was on the point of leaving when someone knocked at the door.
他正要走,这时有人敲门。
6. I thought of it just when you opened your mouth. 就在你要说话的时候,我也想到了。
7. I had hardly[scarcely] closed my eyes when someone knocked at the door.
我刚一闭上眼,就有人在敲门了。
根据以上的例句,我们可以总结出一点:when 从句的A事件,相当于另一个事件B发生的时间点。也就是说,when 从句的重点不在动作本身发生的状态,而只是把它作为一个时间点,所以when 多数情况下用的是一般过去时,则不用正在进行时。因为如果用正在进行时,它表示的就是一段时间而不是一个时间点了。根据这一点,有的文章补充说:when 从句的动词大多是瞬时动词。这种说法也可以参照。 实际上,when 从句也可以有其它的时态,但几乎也不用进行时,因为它也只是作为一个时间参照点。例如:
1. When I got to the airport, the guests had left. 当我赶到飞机场时,客人们已经离开了。
2. When he had finished his homework, he took a short rest.
1/10
当他完成作业后,他休息了一会儿。
3. Why do you want a new job when you have got such a good one already?
你已经找到如此好的工作,为何还想再找新的?
4. You shall borro