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??There are two tenses in English – past and present.
在英语里有两种时态—曩昔时和如今时。
The present tenses in English are used:
如今时在英语里：
to talk about the present
可以描绘如今
to talk about the future
可以描绘将来
to talk about the past when we are telling a story in spoken English or when we are summarising a book, film, play etc。
在口语中讲曩昔的故事或许在描绘一本书、影片或许戏曲时，用如今时
There are four present tense forms 
in English:
英语里如今时有四种方法：
We use these forms:
to talk about the present:
He works at McDonald’s. 
He has worked there for three months now.
He is working at McDonald’s. He has been working there for three months now.
London is the capital of Britain.
to talk about the future:
The next train leaves this evening at 1700 hours.
I’ll phone you when I get home.
He’s meeting Peter in town this afternoon.
I’ll come home as soon as I have finished work.
You will be tired out after you have been working all night.
We can use the present tenses to talk about the past.
