同学你好，该知识点来自沪江网校《英语零基础直达大学六级【全额奖学金班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~

如果问题比较多可以分开提问哦~

supply 供应
The water supply is unsafe.
供水不稳定。
a regular supply of ……的定期供应


go是不及物动词，意思是“持续”
a long way很长的一段路，在这里是一种比喻，“走很长的一段路”其实是“持续很长时间”
There is enough oil to go another week.
油还够用一周。


rattle 发出咔咔的声音。
Every time a bus went past, the windows rattled.
每逢公共汽车经过这里，窗户都格格作响。
for持续多长时间，for months 持续几个月

very few 极少数的，非常少的
There are very few cars on this street.
这条街道上车辆很少。

I have given him是定语从句，修饰coins
very few of the fifty pence pieces pound coins主句的主语
have found 谓语
their way there 宾语

bounce 弹起，弹跳
The ball bounced twice before he could reach it.
球弹了两次他才接到。
It bounced along the pavement 在人行道上跳了几下

rub涂；抹；搽
She rubbed the lotion into her skin.
她把润肤液揉搓进皮肤里。
rubbed his arm with soap and butter 用肥皂和黄油擦他的胳膊

free解放，使自由
She struggled to free herself.
她挣扎着以求脱身。
two fire fighters freed George 两位消防队员使乔治得以解脱

祝同学学习进步~