IF + S + V(SIMPLE PRESENT) , IMPERATIVE (MỆNH LỆNH)EX

1/ - CONDITIONAL SENTENCES LI THUYET BAI TAP DAP AN
CONDITIONAL SENTENCES LI THUYET BAI TAP DAP AN
1/ If + S + V(simple present) , Imperative (mệnh lệnh)Ex:If you go to the post office, please mail this letter for me.