Mr. Brow won't teach our class.

Bị động với thì tương lai đơn → câu chủ động: S+ will/won't+V_inf + O

Many compositions will have been wirtten by the student.

Câu bị động: S+ will/won't + have been + V_ed/PP.2+ (by O)...

This exercise must be done in class by the students.

Modals:

S + modals + Vinf

(Modals: can/ could/ will/would/ should/ must/ ought to/ may/ might/ used to/ be going to/ have to)

S + modals + be + PP.2 +địa điểm+ by O + thời gian

Mai and Ly has done the poster.

have/has been + V_ed/PP.2 ⇒ have/has + V_ed/PP.2

Đáp án:

`1.` Mr.Bow will not teach our class.

`-` Cấu trúc thì TLĐ(chủ động): S + will + not + V(động từ nguyên mẫu)...

`2.` many compositions will have been written by the students.

`-` Cấu trúc thì TLĐ hoàn thành(bị động): S + will + have + been + PII + by O

`3.` This exercise must be done by the students in class.

`-` Cấu trúc thì TLĐ(bị động): S + must + be + PII + (by  o)...

`4.` Mai and Ly have done the poster.

`-` Cấu trúc thì HTHT (chủ động): S + have/has + Ved/V3...