be happy to do sth中的sth是什么意思sth是不是读something的音

be happy to do sth中的sth是什么意思sth是不是读something的音 be happy （about）doing sth .be happy to do sth.哪个对? be happy to do sth比较好的翻译是什么? be happy to do sth和have a good time doing sth的区别 be happy/surprised to do sth后面这个to do sth充当着什么语?如题 used to do sth和be used to doing sth中的used是什么词性?used to do sth和be used to doing sth中的used是什么词性? be likely to do sth中的likely是什么词性? be sure to do sth. be pleased to do sth be able to do sth be going to do sth be let to do sth? be sad to do sth. be made to do sth be obliged to do sth. be used to do sth. 用whant to do sth,try to do ,there be,not.but...,take sb sth,take to a place sth,造句it is time for sth,it is time to do ,be glad to do ,tell sb.about sth,be good at,be happy with,give sb.sth ,take care of,ask sb.to do,造句 used to do sth,be used to sth ,be used to do sth这三个句式中的used发音分别是什么,词性以及翻译