急！！！英语题答案

Question

when i was walking past the playground, i saw the children ( )happily there.
A played
B to play
C be playing
D playing

Answer 1

看见某人做某事see sb. do sth.
看见某人正在做某事see sb. doing sth.
此处用后者，因为前面那个状语从句用的就是进行时，所以选D。没有see sb. be doing 这个用法。

see用法
vt.及物动词
1. 看见,看到[W][+(that)][+wh-][O3][O4][O7]
He was seen to come out.
有人看见他走出来。
We saw her chatting with her neighbors.
我们看到她在和邻居聊天。
I looked for Mike but couldn't see him in the crowd.
我找过麦克,但是在人群中看不到他。
2. 目睹;经历[W]
They have seen hard times.
他们经历过艰难时世。
3. 理解,领会;发现[W][+(that)][+wh-]
I see what you mean.
我理解你的意思。
4. 将...看作,认为[W][O][(+as)]
We see him as an authority on the subject.
我们把他看作为这方面的权威。
5. 想像,设想[W][(+as)][O4]
6. 察看,查看[+wh-]
Go and see if the car leaks oil.
去看看汽车是否漏油。
7. 注意;务必使...,保证[W][Y][+(that)]
See that the lights are turned off before you leave the office.
在离开办公室前务必把灯关了。
8. 会见,访问
9. 陪,送[O]
He saw me to the door and said goodbye.
他把我送到门口,说了声再见。
10. (时代、地方等)历经
Last year saw a slight increase in car accidents in that city.
该市去年车祸的次数略有上升。
11. 参观,观看(戏、电影等)
vi.不及物动词
1. 看,看见;观看[W]
Can you see without your glasses?
你不戴眼镜能看得见吗?
2. 看出,理解;知道[W]
I don't see at all.
我一点也不明白。
3. 想,考虑;查看,调查
Let me see.
让我想一想。

Answer 2

playing
表示过去某一时刻正在发生的事情或动作.常与一个过去的特定时间连用 ,所以应该选D(过去进行时)

Answer 3

playing
有两个答案play 或 playing
既然没有play
那就是playing 了

Answer 4

D playing 当我路过操场的时候，我看到了孩子们正玩的很高兴。
see sb doing sth 看到某人正在做某事
see sb do sht看到某人做某事（全过程）

Answer 5

看看前句语法知，选D

Answer 6

选D。。。
这句话的意思是：当我穿过操场的时候，我看到孩子们正在那里快乐地玩耍！
这里，因为看到的是“正在发生的事情”，故要用现在分词形式。