`31`.You'd better not eat too much meat

`\rightarrow` You had better + ( not ) V : Nên / Không nên làm gì

`32`.How long has Mrs.Mai worked in this factory ?

`\rightarrow` Thì HTHT ( CNV ) : Have / Has + S + V3 / PII ?

`\rightarrow` How long dùng để hỏi về bao lâu

`33`.What is the weight of the chicken ?

`\rightarrow` Hỏi cân nặng : What is the weight of + N ?

`34`.Because Lan was sick , she didn't go to school yesterday

`\rightarrow` Because dùng để chỉ nguyên nhân hoặc kết quả

`35`.The stomachache prevented Mr.John from enjoying the meal

`\rightarrow` S + prevent + O + from + V-ing / N : Ngăn cản làm gì đó

`\text{@ TheFox}`