例句：

　　It's about 2 metres wide.

　　它大約2米寬。

　　He looked about the room.

　　他在房間里四下看了看。

　　I'm definite about this.

　　我對這事毫無(wú)疑問(wèn)。

　　You're completely mistaken about Jane.

　　你對簡(jiǎn)的看法完全錯了。