sos cứu tui gấp lắm cảm ơn đã làm nhoa

`1,` Are they learning new things `?`

`2,` When is he starting work `?`

`3,` Why am I staying at home `?`

`4,` Is it getting dark `?`

`5,` The dog is not playing with a ball`.`

~~~~~

`-` I + am + V-ing

`-` He/She/It + is + V-ing

`-` We/You/They + are + V-ing 

`-` Am/Is/Are + S tương ứng + V-ing `?`

`-` Signal `:` at present, at the moment, now, ...

`#$T`

`1.` Are they learning new things?

`2.` When is he starting work?

`3.` Why am I staying at home?

`4.` Is it getting dark?

`5.` The dog isn't playing with a ball.

`-`

HTTD

`->` S `+` tobe (not) `+` V_ing ...

`->` Tobe `+` S `+` V_ing ...?

`->` Wh_ `+` tobe `+` S `+` V_ing ...?

`@` DHNB: at the moment, now,...

Look!... , Listen!... , ...