例句：
1、 I was waiting for a bus.
我在等公共汽车。
2、He had been patiently waiting in the anteroom for an hour.
他在前厅耐心地等了一个小时。
3、I'm still waiting for confirmation of the test results.
我仍在等待考试结果的通知书。
4、There are a lot of people back there waiting to get in.
后面有许多人等着进来。
5、Students stood around in groups waiting for their results.
学生们成群地站在周围等待成绩。