`3`.It isn't big . It is small

`\rightarrow` Thì HTĐ ( ĐT Tobe ) : S + be + adj / n

`4`.Where do you live ?

`\rightarrow` Thì HTĐ ( CNV ) : Do / Does + S + V ?

`5`.They don't have any vegetables

`\rightarrow` Thì HTĐ ( CPĐ ) : S + don't / doesn't + V

`6`.She is a teacher

`\rightarrow` Thì HTĐ ( ĐT Tobe ) : S + be + adj / n

`7`.My mother is taller than my mother

`\rightarrow` So sánh hơn : S1 + be + adj-er / more adj + than + S2

`8`.This is a pen

`\rightarrow` Thì HTĐ ( ĐT Tobe ) : S + be + adj / n

`9`.Ba went to Da Lat last week

`\rightarrow` Thì QKĐ : S + Ved / V2

`\rightarrow` Đặc điểm nhận dạng : last

`\text{@ TheFox}`