将二者综合起来，就构成了英语多达十几种的时态。写作重要特别注意正确使用：
1）一般式：现状一般式、过去一般式和将来一般式。一般式表示现在、过去或将来发生或存在的经常性或习惯性的行为或状态，现在一般式还常用来表示特征、状态或普遍真理。
一般式常和always, often, usually, every day, sometimes, twice a week, occaionally等表示频率的状语连用。
She always takes a walk in the evening.她总是傍晚散步。
The children are very happy.这些孩子很开心。
Light travels faster than sound. 光比声的传播速度快。
一般过去时态的句中常出现表示过去时间概念的时间状语。如yesterday, two years ago, in 2019, last night (year, month, week), once, then, just now 等。
He lived in Beijing in 2018.他2018年住在北京。
Last year, when he was in Shanghai, he often came shopping here.去年他在上海时经常来这里买东西。
一般将来时态的句中出现的表示将来概念的时间状语有：tomorrow, next year, in 2030, in two years等。
Mary will be here tomorrow morning.玛丽明天早上会到这儿。
We're going to try a new method next month.下个月我们将尝试一种新方法。
2）进行式：现在进行式、过去进行式和将来进行式。进行式表示现状、过去或将来某一时刻正在发生或进行的行为或状态。
Listen! John is singing in his room.听！约翰正在他的房间里唱歌。
He is teaching English in a university.他在一所大学教英语。
I was playing chess when you called.你打来电话时我正在下棋。
He was reading while I was watching TV.我看电视时他在读书。
He will be watching football game at seven this evening.今晚7点他将观看足球比赛。
Will you be using your car tomorrow？明天你要用车吗？
3）完成式：现在完成式、过去完成式和将来完成式。完成式表示行为或状态在现在、过去或将来的某一时刻已经完成，且其结果或影响保持到该时刻。
完成式常使用的时间状语有yet, just, before, once, already, for, since, ever, never, many times 以及so far, recently, lately, up to now, today, this month (year, week)等。
I have already cleaned the room.我已经打扫完房间了。
He has studied English for two years.他学习英语已经两年了。
By the time I hurried to the station, the train had pulled out.我赶到火车站时，车已经开了。
He told me he had been ill since yesterday.他告诉我他昨天就病了。
He will have finished the work by Friday.到周五他就将完成这项工作了。
They will have left for Paris when we get back.我们回来时他们就已经去巴黎了。
4）现在完成进行式：是完成式和进行式的结合，表示行为或状态到现状以及开始且仍在进行。
I have been waiting for another hour, but he hasn't come yet. 我已经等了一个小时，可是他还没来。
I have been thinking about it.我一直在想这件事。
5）过去将来式：表示从过去某一时刻看将要发生的动作或状态，多用于间接引用和从句当中。
I asked him if he would come to our party.我问他是否能来参加我们的晚会。
I knew I would find you in the library.我知道我会在图书馆找到你。
