HTHT:S+Have/Has+PII
TBĐ:S+BE+V past pariple(P2)
+ I (we , you ,they ....) +have +v
he (she ,it dts ít)has +v
(-).i/we/they +haven't+v
she/he/it+hasn't+v
nghi vấn
have +I/you/we/they+v
has+she/he/it+v
no,s+haven't,hasn't
yes, s+has, have
wh question question +have ,has +s+v