选C
see sb.doing sth.用于表达在看某人正在做某事,因为是正在做,所以用进行时.
还有一种用法是see sb.do sth.
see sb doing sth 是强调看见某人正在做某事,着重动作过程,而see sb do sth 是看见某人做某事,着重于看见这件事的发生.
如:I saw him drawing by the river then.
我见他那时正在河边画画.
I saw him draw by the river sometimes
我看见他有时在河边画画.
选C
see sb.doing sth.用于表达在看某人正在做某事,因为是正在做,所以用进行时.
还有一种用法是see sb.do sth.
see sb doing sth 是强调看见某人正在做某事,着重动作过程,而see sb do sth 是看见某人做某事,着重于看见这件事的发生.
如:I saw him drawing by the river then.
我见他那时正在河边画画.
I saw him draw by the river sometimes
我看见他有时在河边画画.