( )to do sth是副词还是形容词

( )to do sth是副词还是形容词 be very likely to do sth中的likely是形容词还是副词,very呢 助动词后接 形容词 还是 副词 like do sth well 还是 do sth good there is something to do to do是形容词还是副词 be +形容词+to do something还是doing sth 是should to do sth 还是 should do sth? 是can to do sth.还是can do sth. must 后面是加to do sth.还是do sth. must 后面是加do sth.还是 to do sth. 用...too+形容词或副词原级+to do sth 造句 keep sth 后面接形容词还是副词.我认为应该是形容词 是want to do sth and do sth还是want to do sth and to do sth?