2012中考英语语法复习时态解析
1. be+不定式:表示命令、安排、倾向或必须、义务等。如:
She is to play Juliet. 她扮演朱丽叶。
You are to make the necessary changes. 你要做出必要的改变。
2. be about to + 不定式:表示即将发生的动作,有即将的意思,但不能和具体的时间状语连用。如:
The package is about to come unwrapped. 那个包快散开了。
3. be going + 不定式:表示按计划或安排打算去做某事,或表示有迹象表明要发生某事。如:
We are going to call her this evening. 我们打算今晚给她打电话。
My sisters going to have a baby this summer. 我姐姐今年夏天要生孩子。
4. 用现在进行时表示将来:主要表示按规定或时间预计要发生的事。如:
The students are leaving on Sunday. 学生们星期日出发。
Were having a party next week. 我们下星期将开一个晚会。
5. 用一般现在时表示将来:表示按规定或时间预计要发生的事。如:
We have a holiday tomorrow. 我们明天放假。
The train leaves at 10:04 this evening. 火车今晚10:04分开。
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