far,strong,safe,high,patient,expensive,dangerous,careful,thin的比较级和*一定要真确的.

far,
farer
farest
strong,
stronger
strongest
safe,
safer
safest
high,
higher
highest
patient,
more patient
most patient
expensive,
more expensive
most expensive
dangerous,
more dangerous
most dangerous
careful,
more careful
most careful
thin
thinner
thinnest

far-farther/further-fartherest/furtherest
strong-stronger-strongest
safe-safer-safest
high-higher-highest
patient-more patient-most patient
expensive-more expensive-most expensive
dangerous-more dangerous-most dangerous
careful-more careful-most careful
thin-thinner-thinnest