英语语法16种时态介绍.ppt

动词的时态? 动词的时态? 动词的时态? * 过去将来完成进行时 过去将来完成时 过去将来进行时 过去将来时 过去将来 将来完成进行时 将来完成时 将来进行时 一般将来时 将来 过去完成进行时 过去完成时 过去进行时 一般过去时 过去 现在完成进行时 现在完成时 现在进行时 一般现在时 现在 完成进行 完成 进行 一般 时 式 过去将来 将来 过去 现在 完成进行 完成 进行 一般 时 式 would have been doing would have done would be doing would do 过去将来 will have been doing will have done will be doing will / shall do 将来 had been doing had done were / was doing did 过去 have / has been doing have / has done am / is / are doing do / does 现在 完成进行 完成 进行 一般 时 式 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. 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. 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 dont want so much. 　 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。 6）祈使句中 （ to give directions or instructions ) Go down the street, and then take the second turning on 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. 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 )+