2013高考英语语法最后30天精讲精练

时态

时态的综合问题

在说或写一句话时，通常要选择一个中心时态，这个中心时态影响其它时态 ，即时态要前后一致。

以“现在”为中心：若开始叙述或描述着眼于“现在”，则常以“现在”为起点，从而会出现一般现在时、现在进行时、现在完成时或一般将来时连用的情况。

Our postman usually delivers our arrival at 7 every morning. It (be) nearly lunchtime and the mail still (not arrive). I (suppose) the mail (come) soon. Perhaps he (be) ill.

(is, hasn’t arrived, suppose, will come, is

以“过去”为中心：若着眼于“过去”，则常以“过去某时”为基点，从而出现一般过去时、过去进行时、过去将来时和过去完成时连用的情况。

We lived in the street. They (build) houses all around us then. We (be) there for 10 years and (imagine) we (stay) there for the rest of our lives. (were building, had been, imagined, would stay)

一般现在时

1、所有或任何时候都发生的动作或情况，即重复发生的动作

--- How often does she visit her parents?

--- Twice a month.

2、永恒的真理 Summer follows spring.

3、 ①在条件或时间状语从句中

I’ll let you know as soon as he gets there.

②讨论计划和时间表或日程表时

We leave at 11:15 and arrive at 17:50 tomorrow.

4、固定词组如