两者同意,通常可以互换.但常更有力地表示确实知道某事是真的时候用CERTAIN.而且各有的固定搭配影响到他们有时又不能互换.
be sure of
be sure to do
make sure
be sure of oneself
to be sure= indeed
for sure
for certain
make certain
be certain
两者同意,通常可以互换.但常更有力地表示确实知道某事是真的时候用CERTAIN.而且各有的固定搭配影响到他们有时又不能互换.
be sure of
be sure to do
make sure
be sure of oneself
to be sure= indeed
for sure
for certain
make certain
be certain