back和be back 的区别

back和be back 的区别
back和be back 的区别

back和be back 的区别
back是形容词,形容回来的状态,不能在前面直接主语
be back是动词,描述已经回来了,可以在前面直接加主语

back:
a. 后面的
v. 后退
ad. 向后地
n.后背,背脊

词形变化:
形容词:backless 动词过去式:backed 过去分词:backed 现在分词:backing 第三人称单数:backs

例句与用法:
1. John plays back in the team.
...

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back:
a. 后面的
v. 后退
ad. 向后地
n.后背,背脊

词形变化:
形容词:backless 动词过去式:backed 过去分词:backed 现在分词:backing 第三人称单数:backs

例句与用法:
1. John plays back in the team.
约翰在这个队打后卫。

2. Three people can sit in the back of this car.
这车的后座可坐3个人。

3. Put the book back on the shelf when you've finished it.
书读完后，要放回原处。

4. Stand back! You're stepping on my toes.
向后站！你踩在我的脚趾头上了。

5. You'll make your back ache if you carry those heavy buckets.
如果你背那些沉重的桶，你的背会痛的。

6. The organization is backed by the UN.
这机构得到联合国的资助。

7. Please back the check.
请在这张支票背后签名。

8. He proved that he was right and his critics had to back down.
他证明了他是正确的，而那些非难他的人不得不收起他们那一套。


英英解释:
名词back:
1. the posterior part of a human (or animal) body from the neck to the end of the spine
同义词：dorsum
2. the side that goes last or is not normally seen
同义词：rear
3. the part of something that is furthest from the normal viewer
同义词：rear
4. (football) a person who plays in the backfield
5. the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
同义词：spinal column, vertebral column, spine, backbone, rachis
6. the protective covering on the front, back, and spine of a book
同义词：binding, book binding, cover
7. the part of a garment that covers the back of your body
8. a support that you can lean against while sitting
同义词：backrest
9. the position of a player on a football team who is stationed behind the line of scrimmage
动词back:
1. be behind; approve of
同义词：endorse, indorse, plump for, plunk for, support
2. travel backward
3. give support or one's approval to
同义词：second, endorse, indorse
4. cause to travel backward
5. support financial backing for
6. be in back of
7. place a bet on
同义词：bet on, gage, stake, game, punt
8. shift to a counterclockwise direction
9. establish as valid or genuine
同义词：back up
10. strengthen by providing with a back or backing
形容词back:
1. related to or located at the back
2. located at or near the back of an animal
同义词：hind, hinder
3. of an earlier date
副词back:
1. in or to or toward a former location
2. at or to or toward the back or rear
同义词：backward, backwards, rearward, rearwards
3. in or to or toward an original condition
4. in or to or toward a past time
同义词：backward
5. in answer
同义词：in reply
6. in repayment or retaliation

be back:
回来

例句与用法:
1. It is expected that John will be back by ten.
约翰在十点以前回来是预料中的事。

2. I'll be back in an instant.
我马上就回来。

3. You must be back by four o'clock.
你务必在4点前回来。

4. She longed to be back in China.
她渴望回到中国。

5. I'll be back soon.
我很快就回来。

6. I won't be back till 11:00.
我11点以前回不来。

7. Could you give me a rough idea when you'll be back?
你能告诉我你大概什么时候回来吗？

8. His parents demanded that he (should) be back by ten.
他的父母要求他十点以前回家。

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