英语语法16种时态介绍ppt课件

had been doing
will be doing
will have done
will have been doing
would be would have would have been
doing
done
doing
一、一般现在时的用法
1) describes things that happen on a regular basis, often used with adverbs of frequency 时间状语： every…, sometimes, at…, on Sunday I leave home for school at 7 every morning. He cycles to work every day.
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4) 表示格言或警句中。 Pride goes before a fall. 骄者必败。
注意：此用法如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般 现在时。
例如：Columbus proved that the earth is round.
5) 现在时刻的状态、能力、性格、个性。
I don't want sFra Baidu bibliotek much.
leave the room.
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6 )在the more…the more…句型中，从句也要用一 般现在时取代将来时。 eg:2. The harder you work, the more you will get..
7 ) 主句为将来时， no matter what / who / which / when / … whatever / whoever / whichever / whenever 从句中用一般现在时 Whatever you say, I will not change my mind. No matter which you like, I’ll give it to you.
I'll write to you as soon as I arrive there. • 由if 引导的条件状语从句中可以用shall或will表
“意愿”，但不表示时态。
If you will accept my invitation and come to our party, my family will be pleased.如果你愿意接受并 参加我们的舞会，我的家人会非常高兴。
Ann Wang writes good English but does not speak well.
比较：Now I put the sugar in the cup.
I am doing my homework now.
第一句用一般现在时，用于操作演示或指导说明的示范性动作，表示言行的 瞬间动作。再如：Now watch me, I switch on the current and stand back. 第二句 中的now是进行时的标志，表示正在进行的动作的客观状况。
2) describes permanent situations The earth moves around the sun. Shanghai lies in the east of China. Water boils at 100° Centigrade .
3）describes fixed events in the future The plane takes off at 9:00 tomorrow morning.
I’ll appreciate it if you will do me a favour. 5）在动词hope, take care that, make sure that, see to
it that 等后。
I hope they have a nice time next week.
Make sure that the windows are closed before you
2）倒装句，表示动作正在进行，如：
Here comes the bus. = The bus is coming.
There goes the bell. = The bell is ringing.
3 ) It will be + ( a period of time )+
before + ( the present simple tense ).
动词的时态
时式
一般
进行
完成
完成进行
现在 一般现在时 现在进行时 现在完成时 现在完成进行时
过去 一般过去时 过去进行时 过去完成时 过去完成进行时
将来 一般将来时 将来进行时 将来完成时 将来完成进行时
过去将来 过去将来时 过去将来进 过去将来完 过去将来完成进
行时
成时
行时
动词的时态
时式 现在 过去 将来 过去将来
一般
进行
完成
完成进行
动词的时态
时式 现在
一般 do / does
过去
did
将来 will / shall do
过去将来 would do
进行
完成
完成进行
am / is / are have / has
doing
done
have / has been doing
were / was had done doing
It will be a year before we take part in the university
entrance examinations.
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4）在时间或条件句中。
When Bill comes (不是will come), ask him to wait for me.
cf. I don’t know when Bill will come.
6）祈使句中 （ to give directions or instructions ) Go down the street, and then take the second turning on
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the left.
知识扩展：一般现在时表将来
1）下列动词：come, go, arrive, leave, start, begin, return的一般
现在时表将来。这主要用来表示在时间上已确定或安排好的
事情 ( timetabled or fixed events )。
The train leaves at six tomorrow morning.
When does the bus start? It starts in ten minutes.