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请具体讲

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请具体讲
请具体讲
解题思路: with和……一起;to到……;for对于……;of……的;off离开
解题过程:
1. used to do sth. 过去常常做某事。(现在不做了)例如:
My father used to be a teacher.
He used to have long hair.
其否定形式常用didn’t use to 或 used not to。例如:
She didn’t use to / used not to wear a skirt.
2. be used to sth / doing sth.习惯于某事或者习惯做某事,其中to为介词,其后跟名词,代词或形容词。例如:
I am used to getting up early.
I wasn’t used to city life, but now I have got used to living in this city.
3. be used to do sth = be used for sth / doing sth. 被用来做……,是被动语态,其中to 为不定式符号。例如:
A knife can be used to cut things.
Seal’s fur can be used for coats.
4. make use of sth. 利用,使用某物。其中use也是名词,可用 good、full、more、little等形容词修饰。例如:
We must make good use of time to study.
5. use one’s head 动脑筋,仔细考虑。例如:
Use your head and you’ll find a way.
最终答案:1. in表示A地在B地范围之内。 如:Taiwan is in the southeast of China. 2. to表示A地在B地范围之外,即二者之间有距离间隔。 如:Japan lies to the east of China. 3. on表示A地与B地接壤、毗邻。 如:North Korea is on the east of China.