be heard to do sth 还是 be heard doing sth?
be heard to do sth 还是 be heard doing sth?
be heard to do be be heard to be doing be heard doing be hea
be glad to do sth 还是be glad doing sth
be scared to do sth还是be scared doing sth
be worth to do sth 还是be worth doing sth
be accustomed to后面加do sth.还是doing sth?
Attentions must be paid to do sth还是doing sth
hear sb. do sth 和 sb.be heard to do sth是固定用法吗?
heard sb.( ) sth.括号中加"do"还是"doing"
saw、heard sb______(do/doing) sth
be afraid to do sth be afraid of doing sth
be +形容词+to do something还是doing sth