75. The washing machine was mended .

-> Bị động thì QKĐ : S + was/were + V3/ed

76. The room is too small for us to live in it .

-> CÔNG THỨC: TOO + adj/adv + (for sb) TO inf.

77. He was arriving while we were having lunch

-> CÔNG THỨC : S + was/were + Ving + while + S + was/were + Ving

78. I found that film is boring.

-> find sth adj: thấy cái gì như thế nào

79. This is the first time they have seen that film.

-> This is the first time + S + have/has + V3/ed

80. Peter has been playing the piano since he was 6.

-> S + started + Ving + when time 

= S + have/has + been + Ving + since time

`75.` The washing machine was mended by Mr. Dryden

S + was/ were + PP + (by O)

`76.` The room is too small to live in it

S + be + too + adj + to + V_inf

`77.` He arrived while we were having lunch

Hành động đang xảy ra trong quá khứ → QKTD (S + was/ were + V_ing)

Hành động chen vào → QKĐ (S + V_ed/ V2)

`78.` I found that film boring

S + find + noun/ V_ing + adj

`79.` This is the first they have seen that film

This is the first + S + has/ have + V_ed/ V3

`80.` Peter has played the piano since he was 6

S + has/ have + V_ed/ V3 + since + mốc thời gian