1. I first ( visit) visited melbourne in 2003

2. We are interested ( cycle) in cycling at the weekend 

3. Look! Children ( play ) are playing football in the schoolyard 

4. You shouldn't ( go ) go out late at night

______________________________________

Công thức :

`-` QKĐ: S `+` V`2`/Ved `+` ...

`-` be interested in `+` V-ing

`-` HTTD : S + am/is/are + V-ing

`-` Should/ Shuldn't `+` Vnt

`@Kai~`

Công thức thì QKĐ (V: thường)

(+) S + V2/ed 

(-) S + didn't + V1 

(?) Did + S+ V1?

DHNB: ago, last (year, month ...), yesterday, in + năm QK, ...

Công thức thì HTTD 

(+) S + am/is/are + Ving 

(-) S + am/is/are + not + Ving 

(?) Am/Is/Are +S +Ving? 

DHNB: now, right now, (!), at present, at the moment,.....

-------------------------------------------------

1. visited

DHNB: in 2003 (QKD)

2. in cycling

be interested in + Ving: thích 

3. are playing

DHNB: Look! (HTTD)

4. go 

shouldn't + V1: không nên làm gì 

`color{orange}{~LeAiFuRuiHuiBao~}`