manage to do sth是什么意思
ask sb. to do sth.什么意思
cant afford to do sth什么意思
waste time to do 还是doing sth
cant wait to do sth什么意思
hope sb to do sth有这个用法吗
its adj for/of sb to do sth区别
feel free to do sth
offer sth for sb还是to sb
make an attempt to do sth