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