`1`. My younger brother goes to school on foot every day

`-` on foot = walk : bằng chân

`-` every day `->` DHNB thì HTĐ

`-` N(số ít) + V(s/es)

`2`. Are there over six hundred students in your school?

`-` are there + N(số nhiều) 

`3`. My book is not as cheap as this book

`-` S1 + tobe + not + as + adj + as + S2

`4`. How much is the books?

`-` How much + tobe + S?

Đáp án: + Giải thích các bước giải:

 1,My brother goes on foot to school every day

Ct:walk=go on foot

2,Are there over six hundred students in your school ?

Ct:Is/Are there+N=Do/Does+S+have?

3,My book is more expensive than this book .

Ct:S1=be+more+adj+than+S2.

4,How much are the books?

CtWhat+is the price of+S/N?

= How much +be +S/N?