` HTĐ ` 

` ( + ) ` : S + Vs/es

` ( - ) ` : S + don't / doesn't + V nguyên mẫu

`( ? ) ` : Do / does + S + V nguyên mẫu

` 1 ` : play

` 2 ` : doesn't write

` 3 ` : do - speak

` 4 ` : don't like

` 5 ` : does - have

` 6 ` : works

` 7 ` : do - water

` 8 ` : doesn't ride

` 9 ` : does - knock

` 10 ` : do - buy

$1.$ play 

$2$ doesn't write 

$3.$ Do you speak 

$4.$ don't like 

$5.$ Does Ann have

$6.$ works

$7.$ Do Jim and Joe 

$→$ Dấu hiệu: every week 

$8.$ doesn't ride

$9.$ Does Elisabeth the door 

$10.$ do you buy 

$⇒$ Ta có công thức Hiện tại đơn như sau: 

Thể khẳng định: I,you,we,they + V_inf

He,she,it + V(s,es)

Thể phủ định: I,you,we,they + don't + V_inf 

He,she,it + doesn't + V(s,es)

Thể nghi vấn: Do + I,you,we,they + V_inf? 

Does + He,she,it + V_inf?