1. 客观真理，客观存在，科学事实，格言或警句。
The earth moves around the sun.
Shanghai lies in the east of China.
2. 经常性或习惯性的动作，常与表示频度的时间状语连用。
I leave home for school at 7 every morning.
3. 现在时刻的状态、能力、性格、个性。
Ann writes good English but does not speak well.
4. 用于图片解说、电影说明、戏剧内容及场景解说等。
Jack passes the ball to John and John catches it.He jumps and casts it into the basket.
特殊用法
1. 下列动词come,go,arrive,leave,start,begin,return的一般现在时可以表示将来，主要用来表时间上已确定或安排好的事情。
The train leaves at six at tomorrow morning.
2. 一般现在时有时也用于某些词和短语（hope,take care that,make sure that）后的宾语从句中表示将来。
Make sure that you finish your task in time.
3. 表进行：here,there引导的倒装句。
Here comes the bus.
【注意】Here he comes.（代词he不倒装)
Here comes John. (名词John需倒装)
一般过去时
基本用法
1. 表示在过去一段时间内，经常性或习惯性的动作。时间状语有：yesterday,last week,an hour ago,the other day,in 1982等。
Where did you go just now?
2. 表示过去连续发生的动作，一般句中没有表示过去的时间状语，通过上下文来体现。
The boy opened his eyes for a moment,looked at the captain,and then died.
特殊用法
wish,wonder,think,hope等用过去时，表示试探性的询问、请求、建议等。
I thought you might have some.
高频句型
It is time that sb. should do sth.(should 不可以省略)
It is time that sb. did sth. "时间已经迟了，早该......了"
eg. It is time you went to bed.
would (had) rather sb did sth.表示宁愿某人做某事。
eg. I'd rather you came tomorrow.
一般将来时
1. 祈使句+and/or并列句结构
Hurry up.or you'll be late.
2. 高频词组辨析
(1). be going +不定式，表示将来。
①主语的意图，即将做某事。
②计划，安排要发生的事。
I'm going to go bungee jumping.
③有迹象要发生的事。
It's cloudy outside.It is going to rain.
(2) be+to do表将来，按计划或正式安排将要发生的事。
We are to discuss the report next Saturday.
(3) be about +to do,意为马上做某事。
He was about to leave for Beijing.
【注意】不能与tomorrow,next week等表示明确将来的时间状语连用。
(4) be doing(现在进行时)表示按计划或安排要发生的事。
We are leaving for Beijing to carry on an negotiation next week.
过去将来时
1. 过去将来时一般用于主句为过去时的宾语从句中。
He said he would be there before Monday.
We hoped she should not go the next week.
2. 过去将来时是一个相对的时态，立足于过去某时，从过去的角度看未来。在一定的语境中也可用于其他从句或句子中。
It was a problem whether he would support us.
3. would +动词原形，过去将来时常可用来表示过去习惯性的动作。此时不管什么人称，一律用would。
Whenever she had time,she would do some reading.
