HTD 

+) S+ Vs/es 

-) S + don't / doesn't + V

?) Do/ does + S + V ? 

I/ you / we / they + V/ do 

She / he / it + Vs/es ; does 

DHNB : every , always , sự thật , điều hiển nhiên , hd lặp đi lặp lại ,... 

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

HTTD 

+) S + tobe + Ving 

-) S + tobe + not + Ving 

?) Tobe + S + Ving ? 

I + am 

She / he / it + is

You / we / they + are 

DHNB : at present , now , at the moment ,... 

$\text{1. goes }$

$\rightarrow$ HTD 

$\text{2. don't have }$

$\rightarrow$ HTD 

$\text{3. doesn't study }$

$\rightarrow$ HTD 

$\text{4. is comming }$

$\rightarrow$ HTTD 

$\text{5. isn't listening }$

$\rightarrow$ HTTD 

$\text{6. isn't reading }$

$\rightarrow$ HTTD 

$\text{7. are you doing }$

$\rightarrow$ HTTD 

$\text{8. are you going }$

$\rightarrow$ HTTD 

$\text{9. doesn't live }$

$\rightarrow$ HTD 

$\text{10. doesn't get }$

$\rightarrow$ HTD 

$\text{11. don't have }$

$\rightarrow$ HTD 

$\text{12. don't work }$

$\rightarrow$ HTD 

$\text{13. is sitting }$

$\rightarrow$ HTTD