First of all,they may have come to this planet of ours thousands or millions of years ago
First of all,they may have come to this planet of ours thousands or millions of years ago
为什么用现在完成式have come to,后面不是有years ago.不用过去完成式had come to
为什么用现在完成式have come to,后面不是有years ago.不用过去完成式had come to
英语人气:669 ℃时间:2020-04-05 04:23:15
优质解答
因为这是may have come 是情态动词的完成时 不属于现在完成时 是对过去情况作出判断的 所以 可以和过去时间连用
我来回答
类似推荐
- They all come from the plants and animals that () millions of years ago.
- All of her family ____ to have a picnic,so they have decided to buy some food first.
- Eash summer,millions of Americans come to the countryside i____ cars and they f_____ places to camp
- ———of them have come back yet,have they?A.None B.Nobody C.Each D.All请教选什么?为什么?
- 改错 1.they have gone to beijing twice this year.2.i hear that one of the students have come back
猜你喜欢
- 1三乙胺能否与2,4-二硝基苯肼反应?
- 2英语翻译
- 3"杯水车薪"这个成语怎么解释啊?
- 4如图所示,在△ABC中,D为BC的中点,DE⊥BC,交∠BAC的平分线AE于点E,EF⊥AB于点F,EG⊥AC交AC延长线于点G.求证:BF=CG.
- 5数学题2(2ab+3a)-3(2a-2b)
- 6碳酸钠与稀硫酸化学方程实验室需要0.1mol /L氢氧化钠溶液100mL.计算所需氢氧化钠的质量.
- 7一辆汽车行1.2千米用汽油4.8千克,行1千米用汽油多少千克?1千克汽油可行多少米
- 8一个平行四边形的一条边长14分米,比它的邻边少2分米,这个平行四边形的周长多少分米
- 9A:what do you often do _____classes to relax yourself B:Listen to music .
- 10这样写对吗---Our Christmas Party will begin at 4pm tomorrow afternoon.Pls get Al's home on time.xx