be sure of doing 和 be sure to do 有什么区别

如题所述

第1个回答  2020-04-29
be
sure
to
do一般指别人认为主语可以做某事
be
sure
of
doing一般指主语自己认为可以做到某事
you're
sure
to
win
the
competition.
i'm
sure
of
passing
the
exam.
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