`11` doesn't go - Dấu hiệu : everyday

`12` go/ go - Dấu hiệu : rarely

`13` am writing - Dấu hiệu : now

`14` have/ go - Dấu hiệu : at 12a.m every day

`15` have - Dấu hiệu : On Monday

`16` have - Dấu hiệu : On friday

`17` am eating/ are playing - Dấu hiệu : at the moment

`18` is looking/ is eating - Dấu hiệu : now

`19` are - Dấu hiệu : sự việc lặp đi lặp lại

`20` Does ....... walk ? - Dấu hiệu : everyday

`->` Cấu trúc : Hiện tại đơn 

`-` Dạng tobe :

`(+)` S + Is/am/are + .........

`(-)` S + is/am/are + not + ...........

`(?)` Is/Am/Are + S + ....... ?

`-` Dạng V thường :

`(+)` S + Vs/es

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

`(?)` Do/Does + S + V ?

`->` Cấu trúc - Hiện tại tiếp diễn

`(+)` S + is/am/are + Ving

`(-)` S + is/am/are + not + Ving

`(?)` Is/Am/Are + S + Ving ?

11.Everyday,Mr.Hung (not go)______doesn't go_______to work by car.
12.In the autumn, I rarely (go)__go_____ sailing and (go)___go_____ to school.
13.I (write)_____am writing_____ a letter to my friend now.
14.At 12 a.m every day, I (have)__have_____ lunch and (go)__go______ to bed.
15.On Monday, I (have)___have____ math and Art.
16.On Friday, I (have)_____have___ English.
17.At the moment, I (eat)am eating an orange and My sisters (Play) __are playing_Tennis.
18.Now, He (look)___is looking____ his cat . It (eat)__is eating____ a mouse in the garden.
19.Phong, An , Ha, Lan (be)_____are_____ close friend.
20.___Does________your mother(walk)___walk______to market everyday?

*DHNB : 

 `+` HTĐ : every , usually , ....

  `+`HTTD : at the moment , now , at present , look , listen,........

*Công thức : 

`+`HTĐ : S + V + O

`+`HTTD : S + tobe + V-ing