Đáp án:

1- If he didn't have to study for exam, he could go out . 
2- If she weren't lazy , she could pass the exam .
3- If he pays me tonight , I will have enough money to by a car . 
4- If he didn't smoke too much , he could get rid of his cough . 
5- If she weren't very shy, she would enjoy the party.
6- If I get work permit , I will stay for another month .
7- If he took some exercises ,he would be healthy . 
8- If I had the right change , we could get the ticket .
9- If you don't study hard, you won't pass the exam .
10- If you are impatient , you will make mistakes .

Giải thích :
+) Câu điều kiện loại 1 : If S + V(s,es)+ O , S + will/can + V_inf

+) Câu điều kiện loại 2 : If S + V2/V(ed) + O , S + would/could + V_inf

    #ngocmai47 

` 1`. If he didn't have to study for exam, he could go out. 
` 2`. If she weren't lazy , she could pass the exam.
` 3`. If he pays me tonight , I will have enough money to by a car. 
` 4`. If he didn't smoke too much , he could get rid of his cough.
` 5`. If she weren't very shy, she would enjoy the party.
` 6`. If I get work permit , I will stay for another month.
` 7`. If he took some exercises ,he would be healthy. 
` 8`. If I had the right change , we could get the ticket.
` 9`. If you don't study hard, you won't pass the exam.
` 10`. If you are impatient , you will make mistakes.

` --------`

` @` Câu điều kiện loại 1
` -` If + S + V-inf/es/s, S + will/can/may (not) + V-inf + ...

` -` Diễn tả một sự việc, hành động nào đó có thể xảy ra ở hoặc trong tương lai

` @` Câu điều kiện loại 2

` -` If + S + V-ed/V2, S + would/could/should (not) + V-inf + ...

` -` Diễn tả điều không có thật ở hiện tại