Công thức thì hiện tại tiếp diễn : 
` ( + ) ` : S + is / am / are + V-ing 
` ( - ) ` : S + is / am / are + not + V-ing 
`( ? ) `  : Is / am / are + S + V-ing ? 
` + `  I + am ( not ) + V-ing 
` + `  He / she / it / chủ ngữ số ít + is ( not ) + V-ing 
` + `  You / we / they / chủ ngữ số nhiều + are ( not ) + V-ing 

- Dấu hiệu : now , at the moment , look ! , listen !, ...

` IV ` 

` 1 . ` They are reading

` ( - ) ` They are not reading

` ( ? ) ` Are they reading ?

` 2 . ` She is drinking tea

` ( - ) ` : She is not drinking tea

` ( ? ) ` : Is she drinking tea ?

` 3 . ` We are sleeping 

` ( - ) `  : We aren't sleeping

` ( ? ) `  : Are you sleeping ? 

` 4 . `  He is doing his homework

` ( - ) `  : He isn't doing his homework

` ( ? ) `  : Is he doing his homework

` 5 . `  You are reading 

` ( - ) `  You aren't reading

` ( ? ) `  : Are you reading ?

` 6 . `  It is walking

` ( - ) `  It isn't walking

` ( ? ) `  : Is it walking ?

`1` `:`

(-) They aren't reading

(?) Are thay reading `?`

`2` `:`

(-) She isn't drinking tea

(?) Is she drinking tea `?`

`3` `:` 

(-) We aren't sleeping

(?) Are you sleeping `?`

`4` `:` 

(-) He isn't doing his homework 

(?) Is he doing his homework

`5` `:`

(-) You aren't reading 

(?) Are you reading `?`

`6` `:`

(-) It isn't walking 

(?) Is it walking `?`

`_______________________________`

`-` Cấu trúc thì hiện tại tiếp diễn : 
(+) S + am/is/are + V-ing + ....

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

(?) Is/Am/Are + S + V-ing + ... `?`

`-` Chủ ngữ "I" `->` Dùng "am"

`-` Chủ ngữ he/she/it và chủ ngữ số ít `->` Dùng is

`-` Chủ ngữ you/we/they và chủ ngữ số nhiều `->` Dùng are

`\text{@ TheFallen}`