watchsb. do sth. 与 watch sb. doing sth.的区别

问题描述:

watchsb. do sth. 与 watch sb. doing sth.的区别
拜托了!

watch sb.do sth.
I watched him steal that book.
我看见他偷了那本书.( 强调事实)
watch sb doing sth
The girl is watching the the chief stealing something.