1. the + 序数词,表示“第几……”;
a+ 序数词表示“又一……,再一……”
例如:The cake is delicious, and I would like a second one. 蛋糕很好吃,我想再吃一块。
2. a number of ... 大量的... ;
the number of... ......的数量;
例如:A number of students like playing computer games.
The number of students is about 1,500 in our school. (责任编辑:admin) |