1. He took a picture of me.

2. He took one picture of me.
3. He took pictures of me.
(Does #1 mean #2? Did he take only one picture of me? Does #3 mean he took several pictures of me?)

Yes, 1 and 2 mean the same thing. "a picture" means "one picture". And 3 means more than one. Adding an "s" to picture makes it plural, more than one. The sentence does not say how many, so it could be two or any number.

Based on the given sentences, let's analyze the meaning of each phrase:

1. "He took a picture of me": This sentence does not specify the exact number of pictures taken. It simply states that someone took a picture of you. It could mean multiple pictures, but it does not provide any definitive information about the number.

2. "He took one picture of me": This sentence explicitly states that only a single picture was taken. So, in this case, it means that he took just one picture of you.

3. "He took pictures of me": This sentence suggests that multiple pictures were taken. The plural form of the word "pictures" indicates that more than one picture was taken.

In summary, sentence #1 does not specify the number of pictures, sentence #2 explicitly states one picture, and sentence #3 implies multiple pictures.