`77`. You shouldn't fall on deaf ears.

`-` fall on deaf ears: bị ngó lơ

`78`. You should talk  your brother-in-law into buying  this car because it is such a bargain.

`-` persuade sb to V `=` talk sb into Ving: thuyết phục ai làm gì

`79`. I've had enough of his behavior.

`-` be fed up with `=` have/ has+ had enough of: chán ngấy= chịu đủ

`80`. Because I never used to make a speech before, I was very nervous.

`-` used not to V `=` never used to V: trước đây chưa từng làm gì

77. You shouldn't fall on deaf ears.

- talk to people who will not listen = fall on deaf ears: bị ngó lơ

- S + shouldn't + V(bare): Ai đó không nên làm gì đó

78. You should talk your brother-in-law into buying this car because it is such a bargain.

- persuade sb + to V = talk sb + into + V-ing: thuyết phục ai đó làm gì đó

- Clause 1 (S + V + O) + because + Clause 2 (S + V + O): bởi vì

79. I've had enough of his behavior.

- be fed up with sth = have had enough of sth: không chịu đựng được cái gì đó

- Thì HTHT: (+) S + have/has + V3/ed

80. Because I never used to make a speech before, I was very nervous.

- S + hadn't + V3/ed = S + never + used to + V(bare): Ai đó chưa từng quen việc gì đó

- Because + Clause 1 (S + V + O), Clause 2 (S + V + O): Bởi vì