一般现在时用动词原形或第三人称单数形式.标志词有:every day,evry Sunday,often,always,usually,sometimes ,on Sundays,on weekdays等等.
现在进行时am/is /are+v-ing形式.标志词:now,at the moment Look!,Listen!
一般过去时用动词的过去式.标志词有:yesterday,last week ,last month,last year,two years ago.
一般将来时用will +v(原形).标志词:tomorrow,in the future,next week ,next Sunday.
过去进行时:was/were+doing 标志词:at that moment,at this time of yesterday,at eight last night.
过去将来时:would +do 没有什么标志词,通常用在从句里.
现在完成时:have/has+动词的过分词.标志词:ever,never,since,already,yet,before.twice,once ,three times.
过去完成时:had+动词的过去分词.此时态是发生在过去的过去,就是在过去之前发生的事.通常用在从句里.有时也有标志词:by the year 2000.
猜你喜欢
- 1一辆小汽车行3/2千米要用汽油3/25升,行1千米要用汽油多少升?
- 2根号1.5X化为最简二次根式怎么化简?根号5+3分之1呢?
- 3The book is written in so easy English that beginners can understand it well 哪错了,为什么
- 4沼气的主要成分是什么?
- 5在1和100之间有多少个整数N,能够使X^2+X-N分解为两个系数的一次因式的乘积().选择 A:0 B:1 C:2 D:9 E:10
- 6I am going to (Beijing) in 2012.对划线提问
- 7甲,乙两个人同时加工一批零件,完成这批任务时,甲做了这批任务的5/9,已知乙每小时加工16个
- 8Lily received a letter from his uncle last week.(改同义句)
- 9作文《My study plan for this term》
- 10三个数依次成等比数列,其和为14,各数的平方和位84,则这三个数为