（1）在感官动词（如find, hear, smell, observe, watch, notice）之后，我们可以用两类分词作宾语补足语。
a.I heard him criticized many times.　我听见他多次受批评。
b.We saw the sun rising from behind the trees.
c.You can see the vapor rising from the wet clothes when they are hung on the fire.
d.Customer: Your dog seems very fond of watching you cutting hair.
Barber: It isn't that. Sometimes I snip off a bit of a customer's ear.
顾客：你的狗似乎很喜欢看你给别人理发嘛。
理发师：不是这么回事，而是因为我有时会剪掉客人们的一点耳朵。
e.A teacher entered the classroom and noticed a girl student sitting near the door with her feet in the aisle and chewing gum. "Ethel," exclaimed the teacher, "take that gum out of your mouth and put your feet in.”
一位老师走进教室后，发现有位女生坐在门边，脚伸到过道里，嘴里还嚼着口香糖。这位老师就大声喊道：“埃塞尔，把口香糖从嘴里吐出来，把脚放进去！”
（2）在这些动词之后，我们也可以用不带to的不定式作补足语。其中，用现在分词与用不定式的区别是：用现在分词，强调动作在进行；用不定式则表示一般的动作或一个动作自始至终的全过程。
a.When I glanced out of the window I saw Mary crossing the road.
b.I watched him step off the pavement, cross the road, and disappear into the post office.
我看见他走下人行道，穿过马路，进了邮局，再也不见了。
c.In the park you often see people do tai chi.
在公园里，你经常能见到人们在打太极拳。
d.I saw him doing tai chi when I came in.
我进来时，看见他正在打太极拳。