Câu 1

1,I haven't seen my cousin for four months 

2,My sister always driver carefully 

3,How long have you had this house? 

4,If we don't hurry up, we will be late for school

Câu 2

1,have (hiện tại đơn) 

2,have learned (hiện tại hoàn thành) 

3,has never eaten (hiện tại hoàn thành) 

4,will save ( đây là công thức câu điều kiện loại 1 nhé) 

I. 1. I last saw my cousin four months ago.

→ I haven't seen my cousin for four months.

2. My sister is always a careful driver. 

→ My sister always drives carefully.

3.When did you have this house?

→ How long have you had this house?

4.Hurry up or we will be late for school.

→ If we don't hurry up, we will late for school.

II. 1.They have had a big party night. (thì hiện tại hoàn thành)

2.I have learnt English for 5 year. (thì hiện tại hoàn thành)

3.My sister has never eaten fast food. (thì hiện tại hoàn thành)

4.If we recycle waste,we will save natural resources. (thì tương lai đơn)

Chúc bạn học tốt!