二，预习导学：
1．复习本单元已学词汇和语法，就教室中的物品，运用more---than, less---than, fewer---than, the most, the least, the fewest, the same as, be different from,
the same ---as 等句型造句。
2．阅读教材，理解语境，掌握听了技巧。
3．Language points:
(1) number of students/teachers 学生/老师的数目
The number of the students (be) about 2500 in our school.
(2)Spend---- doing/ on sth.
(3) Chines e students have more weeks off in the summertime than British
