Did I write these sentense correctly?

[abc71044]

1.) Non-defining clause
Miriam Yeung, who is a famous singer in HK, is my idol.

2.) Definite article
I think she is the most beautiful woman.

3.) Sub-ordinator
We brought a lot of snack because we afraid we will feel hungry at the night.

4.) Introductory phrase
After we have lunch, we go to watch a movie.

[abc71044]

can anyone help pleases?

[Tdol]

2 This sounds a bit incomplete to me- maybe add 'in the world'.
3 We brought a lot of snacks because we were afraid we would feel hungry during the night.