Công thức thì HTĐ (V: tobe)

(+) S + am/is/are ..

(-) S + am/is/are + not .. 

(?) Am/Is/Are + S + ... ? 

I + am

S số ít, he, she, it + is

S số nhiều, you ,we, they + are

Công thức thì HTĐ (V: thường)

S số ít, he, she, it 

(+) S + Vs/es

(-) S+ doesn't + V1 

(?) Does +S +V1?

S số nhiều, I, you, we, they

(+) S + V1 

(-) S+ don't + V1 

(?) Do + S+ V1? 

DHNB: always, usually, sometimes, often, never, seldom,....

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,.....

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

IV.

1. Sometimes

2. are 

3. plays 

DHNB: on Sunday (HTD)

4. swimming

go + V-ing: hoạt động 

5. writing 

6. are 

7. playing

V)

1. Do you want to play badminton?

want + to V : muốn

2. Let's play some games.

Let's  + V1: đưa ra ý kiến, đề nghị

3. I sometimes play football on Sunday.

on + ngày 

ADV chỉ tần suất + V 

4. What subjects are you having now?

DHNB: now (HTTD)

Wh + N ... 

5. I usually play volleyball in my free time.

`color{orange}{~LeAiFuRuiHuiBao~}`