1 She is good at (dance) ....dancing.......
2 He is czary about (sing)....singing......
3 I don't (play) .....play...... cards
4 They are afraid of (swim) .......swimming............... in the sea
5 You should give up (smoke) ...........smoking....... 

  * 

     Sau on , in , about , up , of,..... Ta chia ở dạng ving 

     Còn câu 3 ta chia thì hiện tại đơn 

              S + V + O/C 

             S + Don't / doesn't + V + O/C 

              Do / Does + S + V + O/C 

1 She is good at (dance) ___dancing____

2 He is czary about (sing)____singing______

3 I don't (play) ____play_______ cards

4 They are afraid of (swim) ___swimming_______ in the sea

5 You should give up (smoke) ___smoking________

*Cấu trúc 

Các giới từ như : at , on , in , about , up , of ,......... thì theo sau là 1 V-ing

( 3 ) là thì HTĐ chia theo công thức :

<+> S + V + O

<-> S + don't / doesn't + Vnt + O

<?> Do / Does + S + Vnt + O