`1.` My sister is the tallest student in the class

`-` SSN :

S + tobe + the + (most) + adj_est + ...

`2.` Despite felling tired, Quan stayed up late talking to Nam

`-` Although + S + V + O, S + V + O

`->` Despite + V_ing/N, S + V + O

`->` mặc dù `-` nguyên nhân

`3.` The meat was so rotten that it had to be thrown away

`-` It + tobe + such + (a/an) + adj + N + that + S + V + O

`=` S + tobe + so + adj + that + S + V + O

`->` quá đến nỗi mà

`4.` This room may be used for the classroom

`-` Bị động với ĐTKT `-` may:
S + may + be + V3/ed +  (by  + O)

`5.` She asked me Where I would go if I had a chance to travel to Eutope.

`-` Câu gián tiếp dạng Wh_question:
S + asked + O +  Wh_ +  S  +  V(lùi thì)

`-` Câu điều kiện loại 2 không lùi thì