动词 “forget” 表示 “忘记”，其后可接动词不定式 “to do” 或动名词，分别组成搭配 “forget to do” 和 “forget doing”。“Forget to do” 和 “forget doing” 之间有区别吗？如果 “你忘锁门了”，应该使用哪一个搭配？看视频，学习如何使用这两个表示 “忘记做某事” 的搭配。
 
Hi, everyone. James from BBC Learning English here. Today, we're going to look at the difference between forget to do and forget doing.
Take a look at these examples:
I forgot to lock the door.
I forgot locking the door.
Notice the difference in the way that I said these examples.
When we use the verb forget followed by the infinitive with 'to', it means that you were supposed to do something, but you didn't actually do it.
So, I was supposed to lock the door, but I didn't.
However, when we use the verb forget followed by an -ing verb, it means that you did do something, but you have no memory of it.
So I did lock the door, but I don't recall it.
Don't forget to subscribe to the BBC Learning English channel. Bye, everyone!
 
用法总结
1. 我们用 “forget to do” 来表示 “本来应该做某事，但是因为忘记了，所以没有做”。
I forgot to lock the door.
He has forgotten to do his homework again!
Don't forget to wash your hands.
I forgot to feed the cat. She's really hungry.
 
2. 我们用 “forget doing” 来表示 “不记得做过某事”。
I forgot locking the door. 
I had forgotten going to Paris until I saw the photos.