6. Be cause the water is highly polluted, we can not swim in this part of river.

7. Mr. Minh is admired since he dedicates all his life to protecting environment.

8. The teacher told us not to read the answer keys we finished the task.

9. If you don't practice speaking English, you can't improve your English.

10. He asked Elizabeth if she would be visiting the Taj Mahal when she went to India.

 Cấu trúc:
because = since = as : bởi vì

If loại 1: If + S + V(s/es), S + will/can/shall + V(nguyên mẫu)

Câu tường thuật:

S + say(s)/said hoặc tell/told + (that) + S + V

S+asked/wanted to know/wondered+if/whether+S+V

`6`.Because the water is highly polluted , we can't swim in this part of the river

`->` Because + C1 + C2 : Bởi vì

`=>` Dùng để chỉ về nguyên nhân , lý do ( `6 , 7` )

`7`.Because / Since Mr.Minh dedicates all his life to protecting environment , he is admired

`->` Since + C1 + C2 : Bởi vì

`8`.The teacher told us not to read the answer keys before we finished the task

`->` Tường thuật dạng Mệnh lệnh `-` Lời khuyên :

`=>` S + asked / told / ... + O + ( not ) to do sth

`->` told sb + ( not ) to do sth : Dặn ai làm gì

`9`.If you don't practice speaking English everyday , you can't improve your English

`->` CĐK Loại `1` : Diễn tả hành động có thật ở Hiện tại

`-` If - clause : Thì HTĐ : S + Vs / es

`-` Main - clause : Thì TLĐ : S + will + V

`10`.He asked Elizabeth if she would be visiting the Taj Mahal when she went to India

`->` Tường thuật NV ( Yes / No ) :

`=>` S + asked + O + if / whether + S + V ( lùi thì )

`-` HTĐ `->` QKĐ : S + Ved / V2

`-` TLTD `->` TLQKTD : S + would be + V-ing

`\text{# TF}`