图说英语：牛津初中英语，重点词汇用法汇总(5)

At the age of five,she could swim.在5岁的时候，他就能游泳。
19、ago adv. 以前 two years ago 两年前 three seconds ago 三秒种前
He don’t know what happened to them three seconds ago.
他不知道三秒种前他们发生了什么事。
before adv. 以前
I have never been to the Great Wall before.
我以前从来没有去过长城。
prep. 在…以前，在…前面
I like reading English before I go to bed.我在上床前喜欢读英文。
The train had left before I went to the station.在我到达火车站之前，火车就离开了。
He sits before/in front of me.他坐在我前面。
the day before yesterday 前天 the year before last 前年
20、agree vi. 同意，赞同
agree with sb. 同意某人的看法 agreement n. 同意，协议 反义词：disagree
I agree with your parents that it is better for you to go home earlier.
我同意你父母的观点，你最好早点回家。
21、air n. 空气，大气 air pollution 空气污染
There isn’t air or water on the moon.月球上没有空气和水。
There is less air pollution in Sunshine Town than in Moonlight Town.
阳光镇的污染比月光镇的污染要少。
v. 使通风 air the room 使房间通风
We should air the rooms every day in spring.春天，我应该每天使房间通风。
22、allow vt. 允许 allow sb. to do sth. 允许某人做某事