be glad__(for,to,about.of)sth.
be glad__(for,to,about.of)sth.
It+be+形容词+for/of sb to do sth
be anxious for sth.= be anxious about sth.
for sb to do for sth to be done of sb to do for there to be
to be considerate of sth
"to be sick of sth.
will do sth, be about to do sth, be to do sth, be going to d
"be anxious about /to do sth."
be crazy about sth to do with
be about to do sth的用法
不定式做主语It+be+形容词+for sb.to do sth 和 It+be+形容词+of sb.to do sth
be sure of sth.与 be sure about 区别?