6. 过去完成时与一般过去时

1). 历史事实通常用一般过去时表示，如：

They learned that Lincoln led the American War.

He told the students that Hitler killed millions of Jews.

2). 过去完成时可以代替一般过去时，表示惊奇.

I saw her coming, but in a minute, she had disappeared.

They wanted to keep it a secret, but a few days later, everyone had known it.

3). 当主从复合句中有after, before 引导的时间状语从句时,用过去完成时的地方可用一般过去时.

He (had) finished all the homework before his patents got home.

After I (had) had a short break, I went on to work out the problem.

将来时态

　　谈论将来的状况或动作一般用将来时态。将来时态包括一般将来时、将来进行时和将来完成时等。

1． 一般将来时

一般将来时表示将来发生的动作或情况。常与表示将来的时间状语连用，如tomorrow, next week等。

She will come with us to watch a football match tomorrow.

有几种方法可以表示一般将来。

　1). will/shall do:表示将来发生的动作或出现的状态,shall仅与第一人称连用

I know I will think about her whenever my life feels unbearable.

　2). be going to do:表示主语计划打算的行动或看来就要发生的事情

Today, I'm going to talk about how to find happiness.

　3). be doing:表示计划或安排好的动作（go, come, leave, begin 等动词）

　4). be to do:表示客观上计划或安排好的动作

The line is to be opened to traffic on May Day.

　5). be about to do:表示即将发生的动作,一般不带时间副词或短语

He is about to retire.

　6). do:表示与安排，计划或时刻表有关的动作；或用于if, when等状语从句中代替will do.

将来进行时