He didn't finish his homework,but he went to bed early -> Though If Linda doesn't study hard,she will fail the exam -> Unless The taxi driver was friendly. He took me to the airport (combine,using a relative pronoun) -> The taxi driver The exercise if difficult. He can't do it ( Rewrite the centence,using " such....that") -> It

`1.` Though he He didn't finish his homework, he went to bed early.

`-` Cấu trúc của Though:

`->` S `+` V `+` though `+` S `+` V `=` Though `+` S `+` V, S `+` V

`-` Though `=` Although, Even though `->` Mặc dù, Dù 

`-` Though `+` mệnh đề nhượng bộ, đối lập.

`2.` Unless Linda studies hard, she will fail the exam.

`-` Cấu trúc của Unless:

`->` Unless `=` If not

`-` Unless `+` S `+` V/V(s/es), S `+` will/can/should `+` V-inf `+` ....

`3.` The taxi driver who took me to the airport was friendly.

`-` `Who` `-` Dùng để thay thế cho danh từ chỉ người, và nó đóng vai trò là một chủ ngữ.

`=>` Dịch: Người lái xe taxi dẫn tôi đến sân bay rất thân thiện.

`4.` It is such a difficult exercise that he can't do.

`-` Cấu trúc: Such ... that `->` quá ... đến nỗi ...

`->` S1 `+` V + such `+` (a/an) `+` adj `+` N `+` that `+` S2 `+` V

`=>` Dịch: Bài tập quá khó đến nỗi anh ấy không thể làm được.