一、一般现在时
1.用于表示客观事实, 现在反复发生或习惯性的动作以及存在的特征、状态等,常与often, always, sometimes, usually, once a week, every day, seldom等时间状语连用。
【例句】
He always helps others.
The students get up at six thirty every morning.
2.表示按计划或安排好的将来的动作,常使用arrive, be, go, start, stay等动词。
【例句】
There is a dancing party tonight.
The plane arrives in Beijing at three this afternoon.
3.用在以as soon as, when, after, while, as, until, till, whenever, the monment, the minute, immediately, directly等引导的时间状语从句中或以if, unless, as/so long as, in case, provided that等引导的条件状语从句中，代替一般将来时。
【例句】
I’ll ring you as soon as he comes back.
If it is fine tomorrow we will go swimming.
The machine starts running the moment the button is pressed.
注：if条件句中，有will出现时，will是情态动词，意义为“愿意”，“肯”。
二、一般过去时
一般过去时用于表示过去某时刻或某一时期内的动作或状态, 也可表示过去习惯性的动作。常与表明过去时间的状语连用,如yesterday, then, just now, last month, two days ago, in 1990, 或由when或while等引导的表明过去时间的状语从句。
【例句】
We met him last week.
Where did you live when you were young?
He used to do fourteen hours a day.
注：一般过去时不强调动作对现在的影响，只说明过去。
三、一般将来时
一般将来时用来表示将来某个时间会发生的动作或情况，也可表示将来反复发生的动作或习惯性的动作。
【例句】
We shall (will) go to Nanjing tomorrow morning.
He will take part in an important race across the Atlantic.
The students will have five English classes per week this term.
注：表示将来时态的其他形式与用法：
1.基本结构是will/shall do.
【例句】
We shall send her a glass hand-made craft as her birthday gift.
2.有些动词，如：arrive,be close,come,do,done,go,have,leave,open,play,return,sleep,start,stay等，用于一般进行时，并且通常与一个表示将来时间的时间状语连用，可以表示将来时。
【例句】
My mother is coming to visit me next week and is staying here until May.
3.表示“打算去。。 . . . , 要。。 . . . ”时，可用be going to do.
【例句】
This is just what I am going to say.
4.表示“即将、正要”时，可用be about to do.强调近期内或马上要做的事。
【例句】
Don't worry, I am about to make a close examination on you.
或打算做某事”。
【例句】
She is to be seen in the lab on Monday.
5.同样可以表示“正要、将要”的意思的句型是be on the point of doing.
【例句】
The coach is on the point of giving up the game because our team has been scored 7 points.
四、现在进行时
现在进行时表示此刻或现阶段正在进行的动作。但表示后一种情况时，动作此刻不一定正在进行。
【例句】
We are making an experiment now.
Steve is studying Chinese in Beijing.
另外，现在进行时也可用来给习惯动作加上赞赏或讨厌等感情色彩。
【例句】
He is always cooking some delicious food for her family.
He is always finding fault with his employees.
注：并非所有动词都有进行时，有些表示状态和感觉的动词通常无进行时，除非这类动词的词义发生变化。这类动词有: be, love, like, hate, believe, think（认为）, feel, seem等。
【例句】
Do you see anyone over there?
Are you seeing someone off? （see… off 意为“为…送行”）
五、过去进行时
过去进行时表示过去某一时刻正在发生的动作，或过去某阶段内正在发生或反复发生的动作。通常带有一个表示过去时间的状语或状语从句或能通过上下文判断的过去时间。
【例句】
We were having a preparatory meeting at two-thirty yesterday afternoon.
She was writing a composition when you came in.
Bill was coughing all night long.
六、将来进行时
The Future Continuous Tense
将来进行时表示将来某时可能正在发生或持续的动作。
【例句】
I’ll be reading this time tomorrow.
Most of the young people in the town will be meeting them at the station.
七、现在完成时
现在完成时表示目前已完成或刚刚完成的动作，也可以表示从过去某一时刻发生，现在仍延续着的动作或情况。经常与for+一段时间或与since（+时间一点）引导的短语或从句连用，也可与一些表示不确定过去时间的副词连用，如already, before, ever, never, just, once, recently, yet, up to now, so far, thus far, up till/to now, in the last/past few years等。
【例句】
We have been to Shanghai once.
They have already finished the task.
He has studied English for more than 10 years.
He has studied English since 1991/ since he was twelve.
So far everything has been successful.
八、过去完成时
用法：表示在过去的某个时间或动作以前已经发生的动作或已经存在的状态。就是我们常说的：表示＂过去的过去的动作或状态”。
【例句】There had been someone in our room just now,because I noticed a burning cigarette end on the floor when we opened the front door.
刚才有人在我们的房间里，因为我们打开前门进来时，我注意到地板上有一支仍在燃烧的香烟。
九、将来完成时
将来完成时表示将来某时前将已经完成的动作，也可以用来表示推测。
【例句】
By this time next year they will have built a hotel here.
Hurry up! Or the train will have left before we get to the station.
十、现在完成进行时
现在完成进行时表示从过去某时开始，一直持续到现在的动作。此动作或情况可能已停止，也可能继续下去。但强调到说话时为止一直在进行的动作。
【例句】
They have been working for IBM for 15 years.
I have been waiting for an hour but she still hasn’t come.
有些动词如play, stay, study, teach, wait等，在表示一直继续到现在的动作时，可以用现在完成进行时，或用现在完成时。
Bill has played (has been playing) basketball since he was sixteen years old.
提示：现在完成时和现在完成进行时的区别是：前者强调过去发生的动作对现在的影响。后者强调动作的延续性。
【例句】
I have thought it over. 我已经考虑过这件事了。
I have been thinking it over. 我一直在考虑这件事。
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