动词+宾语+不带to的不定式: 常用动词: feel (一感) ; hear, listen to(二听); make, let, have(三让); see, watch, observe, notice,look at(五看) ;help (半帮助,可带to或不带to)etc. 但改为被动语态时,不定式要加to. I saw him cross the road. He was seen to cros...