Questions & Answers about Tôi gửi hình cho Lan.
Here cho marks the recipient of the action.
So in Tôi gửi hình cho Lan:
- Tôi = subject
- gửi = verb
- hình = thing being sent
- cho Lan = to Lan / for Lan
With gửi, the pattern gửi something cho someone is very common.
Important: cho does not mean the main verb give here. It is part of the structure showing who receives the picture.
Vietnamese usually does not use articles like English a, an, or the.
So hình can mean:
- a picture
- the picture
- pictures
The exact meaning depends on context.
If you want to be more specific, you can add a number or classifier, for example:
- một tấm hình = one picture
- bức hình đó = that picture
But the bare noun hình is completely natural.