Can you check these sentences, please?

1) You are forbidden to enter this area.
You mustn't enter this area.
2) It wasn't necessary for John to go to work because it was Sunday.
He didn't have to go to work.

I don't know what this question has to do with art.

Those sentences are correct.

Sure! Let's check the sentences:

1) You are forbidden to enter this area.
You mustn't enter this area.

These sentences have the same meaning and both are grammatically correct. They convey the idea that entering the area is not allowed. To check if these sentences are correct, you can compare them to the following explanations:

- "You are forbidden to enter this area" uses the verb "are forbidden," which means you are not permitted to enter.
- "You mustn't enter this area" uses the modal verb "mustn't," which expresses prohibition.

2) It wasn't necessary for John to go to work because it was Sunday.
He didn't have to go to work.

Both sentences are correct and have the same meaning. They imply that John had the freedom or choice not to go to work since it wasn't necessary due to Sunday. To check if these sentences are correct, consider the explanations below:

- "It wasn't necessary for John to go to work because it was Sunday" suggests that John didn't need to go to work as it was a day off.
- "He didn't have to go to work" simply states that John had no obligation or requirement to go to work.

Overall, both sets of sentences are grammatically correct and convey the intended meanings.