about

音标发音

在指“不久就要……”时，后通常接不定式，如about to start。也有接动名词，如about starting。但是不可再加表示时间的词，如不可说about starting at once；
指“大约”的意思时，表达方式有about ten，about half等。注意ten和half都是明确的数量，about不该用在“多少不定”的词前，如about more than ten，about less than half；
与at搭配使用时，about是副词，没有at时，about 是介词。句中可有at，也可没有，意思相同。I went (at) about five (o'clock).
about + 不定式，表示“即将要去做某事”。Don't go out now - we're about to have lunch.
about与动词go组成短语时，为副词，意为“着手做，从事”。

Instead of complaining about what's wrong, be grateful for what's right.
别抱怨不好的事，要对好的事心存感恩。
If you're not satisfied with the life you're living, don't just complain. Do something about it.
对于现况的不满，不能只是抱怨，要有勇气作出改变。
Doctors are complaining about being barraged by drug-company salesmen.
医生们抱怨他们疲于应付医药公司的销售人员。
She is always worrying about little things.
她老是为小事烦恼.
I shall have to read up on this subject if I am to give a talk about it.
如果我准备做一次关于这课题的讲座,我就必须把它彻底研究一番.

You use about to introduce who or what something relates to or concerns.
When you mention the things that an activity or institution is about, you are saying what it involves or what its aims are.
You use about after some adjectives to indicate the person or thing that a feeling or state of mind relates to.
If you do something about a problem, you take action in order to solve it.
When you say that there is a particular quality about someone or something, you mean that they have this quality.
If you put something about a person or thing, you put it around them.
About is used in front of a number to show that the number is not exact.
If someone or something moves about, they keep moving in different directions.
About is also a preposition.
If someone or something is about, they are present or available.
If you are about to do something, you are going to do it very soon. If something is about to happen, it will happen very soon.
how about&rarrsee how
what about&rarrsee what
just about&rarrsee just
If someone is out and about, they are going out and doing things, especially after they have been unable to for a while.