`1`.Have you ever attended ?

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

`\rightarrow` Đặc điểm nhận dạng : ever

`2`.shortage

`\rightarrow` Cấu trúc : A / An / Không + ( adj ) + N

`\rightarrow` shortage of energy : thiếu năng lượng

`3`.inventors

`\rightarrow` So sánh nhất : S + is / am / are + the adj-est / the most adj

`\rightarrow` inventor ( n ) : nhà phát minh

`4`.Despite being old , he works hard

`\rightarrow` Despite / In spite of + V-ing / N + Clause : Mặc dù

`5`.Plants won't be burned to heat this winter by local people

`\rightarrow` BĐ `-` Thì TLĐ : S + will be + V3 / PII ( by O ) ( `5 , 7` )

`6`.My mother used to live in a small village when she was a child

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

`7`.Non-renewable energy sources like coal or oil will be used up some day

`8`.It took us one hour to download movie from Internet yesterday

`\rightarrow` It + takes / took + O + time + to do sth : Tốn bao nhiêu thời gian làm gì

`\text{# Kirigiri}`