1. That is a pen => ( - ) That isn't a pen ( ? ) Is that a pen ?
2. The book is on the table => ( - ) The book isn't on the table ( ? ) Is the book on the table ?
3. Nam and Ba are very well => ( - ) Nam and Ba aren't very well ( ? ) Are Nam and Ba very well ?
4. He is a doctor => ( - ) He isn't a doctor ( ? ) Is he a doctor ?
5. The children are good students => The children aren't good students ( ? ) Are the children good students ?
6. Thu is pretty => ( - ) Thu isn't pretty ( ? ) Is Thu pretty ?
7. She is in her classroom => ( - ) She isn't in her classroom ( ? ) Is she in her classroom ?
8. They are tall => ( - ) They aren't tall ( ? ) Are they tall ?
9. It is hot => ( - ) It isn't hot ( ? ) Is it hot ?
10. My name is Lan => ( - ) My name isn't Lan ( ?) Is your name Lan ? 

Còn đại từ thì nghe nó kì kì í ! chắc là ngôi ko đúng ....

* Câu phủ định:
1. That is not a pen
2. The book is not on the table
3. Nam and Ba are not very well
4. He is not a doctor
5. The children are not good students
6. Thu is not pretty
7. She is not in her classroom
8. They are not tall / It is not hot
9. My name is not Lan

* Câu nghi vấn:
1. Is that a pen ?
2. Is the book on the table ?
3. Are Nam and Ba very well ?
4. Is he a doctor ?
5. Are the children good students ?
6. Is Thu pretty ?
7. Is she in her classroom ?
8. Are they tall? / Is it hot ?
9. Is your name Lan ?