一、一般时
一般时态包括:一般现在时,一般过去时,一般将来时和一般过去将来时。
1.注意在时间或条件状语从句中一般现在时表示将来的动作,一般过去时表示过去将来的动作。
Once environmental damage ， it takes many years for the system to recover.
A)has done B)is to do C)does D)is done
（B4，1997.6-50，D对）一旦环境遭到破坏,系统的恢复要花多年时间。
I decided to go to the library as soon as I .
A） finish what I did B） finished what I did
C） would finish what I was doing
D） finished what I was doing
我决定一做完手头的工作就去图书馆。（B4，1991.6-43， D对）
但是在下面的句子中,“will+动词原形”不是将来时,而表示意愿:
We shall be glad if you will send us a copy of your illustrated cata-logue and current price. 如果你们愿意给我们寄带图目录及当前价目表,我们会很高兴。
在hope， assume， suppose等之后的that从句,可用一般现在时表示将来:
I hope the plane isn't / won't be late. 我希望飞机不会延误。
如果说话者谈论将来的事情时认定它是一个不可改变的事实,也可用一般现在时表示将来:
Tomorrow is / will be Sunday. 明天是星期天。
The next term begins / will begin on September 1. 下学期九月一日开学。
2.句子中有明确的过去时间,或谈到已经死去的人的情况,一般要用过去时。
The last half of the nineteenth century the steady im-provement in the means of travel.
A)has witnessed B)was witnessed C)witnessed D)is witnessed
十九世纪的最后五十年,旅行的手段稳步地改善了。（B4，1998.6-41，C对）
Your late wife was far from skilled in needle work.你的已故妻子不善针线。
used to 表示“过去曾经,现已不再”:
The Browns here， but not any more.
A)were used to living B)had lived
C)used to live D)had been living
布朗一家曾经住在这里,现在已经不在这里住了。（B4，1994.1-59,C对）
3.一般将来时表示将来发生的动作:
Turn on the television or open a magazine and you advertisements showing happy， balanced families.
A)are often seeing B)often see C)will often see D)have often seen
打开电视、杂志,你会看到那些显示幸福和睦家庭的广告。（B4，1995.6-47，C对）
While people may refer to television for up-to-the-minute news， it is unlikely that television the newspaper completely.
A)replaced B)have replaced C)replace D)will replace
尽管人们从电视获取最新消息,然而电视完全取代报纸是不可能的。（B4，1995.6-48，D对）
4.一般过去将来时用来表示从过去某时看将来要发生的事,常用在间接引语或宾语从句中:
He said that he would let us have the book next day. 他说第二天把书给我们。
He never imagined he would become a businessman.他没有想到他会成为商人。
