about介词的用法归纳复习
回答
爱扬教育
2022-04-05
表示“大约”，通常用于数字前。
在动词 know, hear, speak 等之后用不用介词 about，含义有差别。
用于be about to do sth结构，其意为“即将”“马上”。注意该短语不与具体的时间状语（如 soon, tomorrow, immediately, at once 等）连用。
在动词 know, hear, speak 等之后用不用介词 about，含义有差别。
用于be about to do sth结构，其意为“即将”“马上”。注意该短语不与具体的时间状语（如 soon, tomorrow, immediately, at once 等）连用。
扩展资料
It's about this high.
大约有这么高。
There was much discussion about the reasons for the failure.
就失败的原因进行了大量的讨论。
The population is increasing at about 6% per year.
人口以每年约6%的速度增加。
It's only human nature to be worried about change.
对变革有忧虑不过是人之常情。
We estimated it would cost about 5 000.
我们估计要花费大约5000欧元。