`31.` How much is this pair of shoes?

`-` Cấu trúc hỏi giá cả: How much + be + S...?

`-` pair of shoes: đôi giày

`32.` How many crayons does your son have?

`-` Cấu trúc: How many + N số nhiều + do/ does + S + V..?

`-` Your son là số ít `->` does

`33.` He was at home yesterday

`-` yesterday là DHNB thì QKĐ

`-` Cấu trúc (tobe): S + was/ were + O..

`-` He là số ít `->` was

`-` at home: ở nhà

`34.` What are you going to do? - I stay at home 

`-` Cấu trúc thì TLG: (Wh_) + am/ is/ are + going to + V + O..?

`-` you là ngôi thứ 2 `->` are

`-` Cấu trúc thì HTĐ: S + V(s/es) + O

`-` at home: ở nhà

`35.` My brother wants to see bears and giraffes

`-` Cấu trúc thì HTĐ: S + V(s/es) + O..

`-` Cấu trúc: want to + Vinf..: muốn làm gì

`31` How much is this pair of shoes ? 

`-` How much : hỏi giá cả

`-` How much + be + N ? 

`32` How many crayons does your son have ? 

`-` How many : hỏi số lượng 

`-` How many + N(đếm được,số nhiều) + Aux + S + V + O ? 

`33` He was at home yesterday 

`-` Thì Quá Khứ Đơn - yesterday 

`-` S + was/were + ... 

`-` He là chủ ngữ số ít `->` chia was

`34` What are you going to do ? - I am going to stay at home

`-` S + is/am/are + going to + V-inf + O 

`-` Is/am/are + S + going to + V-inf + O ? 

`35` My brother wants to see bears and giraffes 

`-` want to do sth : muốn làm gì

`-` S + V(s/es) + O