a bit有一点儿;一会儿
a bit of有一点儿
a bottle of 一瓶
a cup of 一(茶)杯
a glass of 一(玻璃)杯
a few 一些，少数几个
again and again再三地，反复地
after all 毕竟，终究
after a while 过了一会儿
after school 放学后
agree on 同意，赞成
agree to do sth 同意做某事
agree with (sb) 与某人意见一致
a group of 一群
a kind of 一种
a little 一点，少量
a lot of 许多，大量
a lot 许多，大量
a moment ago 刚才
a moment later 片刻之后
a place of interest 名胜
and so on 等等
across from 在对面
a list of ...的清单
a pair of 一双
a quarter past/to ..点过一刻/差一刻到..点
a roll of film 一卷胶卷
a shop assistant 售货员;店员
a top speed of 50 kilometres per hour 每小时50千米的`高
a number of若干的;许多的
a set number of固定数量的;一定数量
