`1.` They aren’t never late for school.

aren't `->` are

`-` Dấu hiệu: never (không bao giờ) `->` Thì hiện tại đơn

`-` Công thức: 

$(+)$ S + am/is/are + N/adj

`-` "never" mang nghĩa phủ định nên to be không thêm "not"

`2.` My mother bought for me a nice schoolbag on the occasion of a new school year.

bought for me `->` bought me

`-` Cấu trúc buy(biến đổi) + O: mua cho ai

1. They aren’t never late for school.

Sửa: They have never been late for school.

Có "never" -> Thì hiện tại hoàn thành

2. My mother bought for me a nice schoolbag on the occasion of a new school year.

Sửa: My mother bought me a nice schoolbag on the occasion of a new school year.

Buy sb sth: Mua cho ai cái gì