"to be sick of sth.
"to be sick of sth.
to be considerate of sth
be sick of
be sick of 加..
be afraid to do sth be afraid of doing sth
be glad__(for,to,about.of)sth.
he seems to be sick
辨析 be sure of 与be sure to do sth
be afeaid to do sth和be afraid of sth和be afraid of doing sth的
be confident of doing sth,那么be confident of to do sth是不是也可以?
be afaid of doing sth/be afraid that/be afraid to do sth.造句
be afraid of doing sth be busy doing sth be glad to do buy s