to be:
Hiện tại:
(+)
I AM
He/She/It + IS
They/We/You + ARE
(-)
I AM NOT = I AMN'T
He/She/It + IS NOT = ISN'T
They/We/You + ARE NOT = AREN'T
(?)
Am I (not)...?
Is he/she/it (not)...?
Are they/we/you (not)...?
Quá khứ:
(+)
I/He/She/It + WAS
They/We/You + WERE
(-)
I/He/She/It + WAS NOT = WASN'T
They/We/You + WERE NOT = WEREN'T
(?)
Was I/he/she/it (not)...?
Were they/we/you (not)...?
Hoàn thành: BEEN
To be +...:
1. Danh từ: I am a student.
2. Tính từ: She is friendly
3. Động từ dạng -ing: We were playing football when she came.
4. Động từ dạng -ed (bị động): She was told to open the door.