1.Solar enery will be used instead of gas in the future.

⇒S + will/won't be + V_pII + + by O

2.My father used go to work by car, but now he goes by bus. 

 S + used to + V + ...

3.Everyboy will increase the use of biogas for cooking , won'

they ?

Câu hỏi đuôi : 

every body ⇒they

will ⇒ won't

4.In spite of being young,he performs skillfully.

In spite of + N/V_ing + ... ,.....

1 Solar energy will be used instead of gas in the future

( câu bị động ở thì tương lai S + will + V-nguyên thể + ... + O ----> S + will be + pp + ( by O )

2 My  father used to go to work by caar

( cấu trúc used to nói về việc làm , thói quen trước đó nhưng giờ không làm nửa  --> S + used to + V-nguyên thể )

3 Everyboy will increase the use of biogas for cooking , won' they ?

( câu hỏi đuôi )

4 In spite of being young , he performs skillfully

( Althought = Despite/ in spite of + V-ing/Nouns )