A
see, watch, look at ,feel, notice, observe, listen to, hear 等感官动词(短语)及make, let, have等役使动词后用不带to的不定式作宾补,但这类结构变成被动语态时,to
不可以省略另外,在感官动词后也可用现在分词作宾补,但其意义表示动作正在进行。如:I saw him running after the bus.(动作正进行)
A
see, watch, look at ,feel, notice, observe, listen to, hear 等感官动词(短语)及make, let, have等役使动词后用不带to的不定式作宾补,但这类结构变成被动语态时,to
不可以省略另外,在感官动词后也可用现在分词作宾补,但其意义表示动作正在进行。如:I saw him running after the bus.(动作正进行)