- Thì HTĐ :

+ KĐ : S + Vs / es - S + is / am / are + adj / n

+ PĐ : S + don't / doesn't + V - S + isn't / 'm not / aren't + adj / n

+ NV : Do / Does + S + V ? - Is / Am / Are + S + adj / n ?

=> DHNB : usually , often , sometimes , never , always , every , ...

* I + am ( not ) - V-inf

* He , She , It + is ( not ) - Vs / es

* You , We , They + are ( not ) - V-inf

=> Dùng để diễn tả hành động xảy ra ở Hiện tại hoặc nói về sự thật

1.

- She isn't beautiful

- Is she beautiful ?

2.

- His friends aren't intelligent

- Are his friends intelligent ?

3.

- They don't read books in the evening

- Do they read books in the evening ?

4.

- He doesn't play football in the afternoon

- Does he play football in the afternoon ?

5.

- The cats don't like fish

- Do the cats like fish ?

\text{# TF}

1.

(+) She is beautiful

(-) She isn't beautiful

(?) Is she beautiful ?

---------

2.

(+) His friends are intelligent

(-) His friends aren't intelligent

(?) Are his friends intelligent ?

-----------

3. 

(+) They read books in the evening.

(-) They don't read books in the evening.

(?) Do they read books in the evening ?

-----------

4.

(+) He plays football in the afternoon

(-) He doesn't play football in the afternoon.

(?) Does he play football in the afternoon ?

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

5. 

(+) The cats like fish

(-) The cats don't like fish.

(?) Do the cats like fish ?

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

*** Công thức chung

@ Hiện tại đơn với động từ tobe

(+) S + is/am/are + N/adj

(-) S + is/am/are + not + N/Adj

(?) Is/am/are + S + N/Adj ?

@ Hiện tại đơn với động từ thường

(+) S + V(s/es)

(-) S + don't/doesn't + V_inf

(?) Do/does + S + V_inf ?