重点讲解：
1. fall asleep
入睡；睡着；进入梦乡；
eg. He was wont to fall asleep after supper.
他老是吃完晚饭就打盹If!R&*Z6_HC。
eg. He fell asleep while (he was) doing his homework.
他做著做著功课就睡著了cPN%bgLfs#TJ@。
2. sth. get to sb.
对…产生影响；使痛苦；
eg. That's the first time I lost my cool in 20 years in this job. This whole thing's getting to me.
干这份工作20年来，我头一次失去了冷静，这一切让我大伤脑筋1]v!3-|#L@Rr(K)r。
eg. Her constant nagging is beginning to get to him.
她不停地唠叨惹得他生起气来2|D^8Txn3g|L.HM]+t+。
3. in between
在…之间；处于…中间；
eg. Up to then, they'd merrily bashed out albums in between tours.
那时，他们已经利用巡演的间隙轻松炮制了多张专辑qXz9u!;-Qo^SlpDt.]Q。
eg. We have two lessons this morning, but there's some free time in between.
今天上午我们有两节课，课间有些休息时间8NN8bg,5K_。
4. on average
平均起来；按平均值；
eg. There is very little rain here, merely 60 mm in a year on average.
这儿雨水极少，平均每年只有60毫米[Pr.19|-Yl~xH7[[6!H。
eg. On the average, there are 300 tourists a week.
每星期平均有300名游客)bV|m]=qB*i。
5. add to
添加；增加；掺加；
eg. A few jokes will add a final fillip to your speech.
几句笑话会给你的演说添些生气CJrCRoxwJe#8k。
eg. I have nothing to add to my earlier statement.
我对我先前说的话，没有什么补充的,qCFxrR9o+1kjC8C%。