expression:

a large crowd of 一大群

in twenty minutes’time 20分钟之后

一些时间使用的介词

in two year‘s time

on Saturday

in the week

at the moment

on Novermber 7th

in 1979

in December

at night

in the morning

until tomorrow

The people were under the Town Hall clock.

words：

welcome，欢迎

crowd，人群

gather，聚集

hand，指针

shout 喊叫

refuse，拒绝

laugh，笑