`15`.It is very interesting to have a summer camp abroad

`\rightarrow` It is ( not ) + adj ( for O ) + to do sth : Như thế nào để làm gì ( `15 , 19` )

`16`.My father will go to Ho Chi Minh City by plane next Sunday

`\rightarrow` Thì TLĐ : S + will + V

`\rightarrow` fly ( v ) : bay `=` plane ( n ) : máy bay

`17`.He is a very good English speaker

`\rightarrow` Thì HTĐ ( ĐT Tobe ) : S + is / am / are + adj / n ( `17 , 18 , 24` )

`\rightarrow` Cấu trúc : ( A / An ) + ( Adj ) + N ( `17 , 18 , 24` )

`18`.My sister is a very good singer

`19`.It is very convenient to live in a big city

`20`.In spite of the difficult exam , we finished it

`\rightarrow` In spite of / Despite + V-ing / N + Clause : Mặc dù ( `20 , 28` )

`\rightarrow` Dùng để chỉ sự đối lập giữa `2` mệnh đề ( `20 , 26 - 28` )

`21`.Because of his stomachache , he didn't go to school [ Đề có vấn đề ]

`\rightarrow` Because of + V-ing / N + Clause : Bởi vì

`\rightarrow` Dùng để chỉ nguyên nhân , lý do

`22`.I used to walk to work when I was young

`\rightarrow` `\text{S + used to + V :}` Đã từng

`23`.Did you use to play sports afterschool ?

`\rightarrow` `\text{Did + S + use to + V ? :}` Đã từng `?`

`24`.He is a very skillful soccer player

`25`.She drives more carefully and slowly than me

`\rightarrow` So sánh hơn ( Trạng từ ) : S1 + V + adv-er / more adv + than + S2

`\rightarrow` Khi Trạng từ có `2` âm tiết trở lên , ta dùng " more " để trước Trạng từ đó

`26`.Even though he was ill , he helped his mother with the housework

`\rightarrow` Even though / Though + C1 + C2 : Mặc dù ( `26 , 27` )

`27`.Though the film iss terrifying , he wants to see it

`\rightarrow` Adj-ing dùng để diễn tả trạng thái , tính chất của sự vật , sự việc

`28`.Despite having to work , they watched films on DVD all night

`\text{@ Tails347}`