`1.` You and your friends are doing martial arts in the classroom.

`2.` What are you doing?

`3.` Lucy is riding her bike in the park

`4.` Are Nick and Tony playing soccer on the soccer field?

`5.` What is your sister doing?

`----------`

`***`Thì Hiện tại tiếp diễn

`@`Thể khẳng định

I + am + V-ing

He/She/It + is + V-ing

You/We/They + are + V-ing

`@`Thể phủ định

Thêm "not" sau động từ tobe

I + am not + V-ing

He/She/It + is not (isn't) + V-ing

You/We/They + are not (aren't) + V-ing

`@`Thể nghi vấn

Đảo động từ tobe lên đầu câu

Is + he/she/it + V-ing?

`->`Yes, he/she/it + is

`->`No, he/she/it + isn't

Are + we/they + V-ing?

`->`Yes, we/they + are

`->`No, we/they + aren't

Are + you + V-ing?

`->`Yes, I am

`->`No, I am not

`1.` You and your friends are doing Martial in the classroom

`2.` What are you doing?

`3.` Lucy is riding her bike in the park

`4.` Are Nick and Tony playing soccer on the soccer field?

`5.` What is your sister doing?

`_________________`

`***` HTTD:

`(+)` S  + am/is/are +  V_ing  + O

`(-)` S  +  am/is/are + not  +  V-ing + O

`(?)` Am/is/are +  S  +  V_ing  +  O?