多一小品词to
① 在 had better, would rather, rather than 后的不定式前用 to 是多余的。如：
You had better not to go.
I would rather to stay at home.
② 在 make, let, have, see, feel, watch, notice, observe 等使役、感官动词后充当宾语补足语的不定式前用 to 是多余的。如：
He made me to do heavy work.
Let me to hear you to play.