what did you see?你看到什么了?
I saw many people planting trees on the hill.我看到很多人在山上种树.
see sb do sth是看到的整个过程,
see sb doing sth.看到的是正在进行的动作.
例如:i saw sb steal your bike.指的是整个偷车的过程都看到了.
i saw sb stealing your bike.只是看到了偷车的动作.二者强调的重点不同.
what did you see?你看到什么了?
I saw many people planting trees on the hill.我看到很多人在山上种树.
see sb do sth是看到的整个过程,
see sb doing sth.看到的是正在进行的动作.
例如:i saw sb steal your bike.指的是整个偷车的过程都看到了.
i saw sb stealing your bike.只是看到了偷车的动作.二者强调的重点不同.