阻止某人做某事,阻止某人做某事的4种用法

句型么阻止某人做某事？

1. stop sb tfrom doing sth

2. prevent sb from doing sth

3. keep sb from doing sth

补充：

因为 stop sb. (from) doing sth 和 prevent sb (from) doing sth 省掉了from 不会影响语义，而 keep sb. from doing sth 省掉from后，意思正好相反：

I kept him working on his homework —— 我一直让他做作业

I kept him from working on his homework —— 我不让他做作业

4.discourage sb from doing sth

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