about是介词，后面一般加名词，或动名词。

例句：

Wine contains about 10% alcohol.

葡萄酒含有约10%的酒精。

Hes very intense about everything.

他对一切都很热心。

Its about 2 metres wide.

它大约2米宽。

扩展资料

'm definite about this.

我对这事毫无疑问。

You're completely mistaken about Jane.

你对简的看法完全错了。

He's ignorant about modern technology.

他对现代科技一无所知。

It costs about $10.

这大约要花10元钱。

He's mad about you.

他对你疯迷。