37. Since her husband hated holidays so much, she decided to go on her own.

38. I'll post the CD today so that you will get it by the weekend. 

39. The second race wasn't as easy as the first one. 

40.  If you talk loudly, the baby will wake up.

$37.$ She decided to go on her own since her husband hated holidays so much.

- S + V + since + S + V: Bởi vì ...

- Dùng để giải thích lí do của hành động.

$38.$ I'll post the CD today so that you will get it by the weekend. 

- S + V + so that + S + V: để mà ...

$39.$ The second race wasn't as easy as the first one. 

- So sánh ngang bằng: $S_{1}$  + tobe + (not) + as + adj + as + $S_{2}$ 

$40.$  If you talk loudly, the baby will wake up.

- Câu điều kiện loại $I$: If + S + V (s/es), S + will + V.

  + Diễn tả một sự việc có khả năng xảy ra ở hiện tại.