2016-2017学年 人教版 必修四 Unit 1 Women of achievement Grammar课件 (8)
2016-2017学年 人教版 必修四  Unit 1 Women of achievement Grammar课件 (8)第3页

第一类, 感觉动词, 所接的宾补可以是v-ing形式,也可以是动词原形。 feel, hear, listen to, notice, observe, see, watch, look at

1. I saw him ____________ (cross) the road. 2. He was seen _______________ (cross) the road.

cross/crossing

to cross/ crossing

但变为被动语态时,不定式要带to