作者:Douglas Angelo 11 年以前
511
ingles - if claueses
ingles - if claueses
3° cond
possible in the past
IF+had+past participle-->would have past participle
2° cond
hypothesis
if +simple past-->would/could verb base form
1° cond
real possibilit
if+simple present ->WILL/CAN+verb base form
cond zero
general conditions
if simple present->simple present