It's time to ...和 it's time for ...区别?急.
It's time to ...和 it's time for ...在任何情况下都可以相互转换吗?
例如：1.It's time to brush teeth.
2.It's time for teeth.
3.It's time for brushing teeth.
哪位可以回答啊1.2.3.到底哪句是正确的?
这个两个句型任何情况都可以转换吗?有什么条件吗?
望高手指教,最好举例说明,