1. She is busy from Monday to Friday.
2. She is busy from Monday through Friday.
3. She is busy Monday to Friday.
4. She is busy Monday through Friday.
[Can we omit 'from'? are they all okay?]
5. She goes to the movies on Mondays.
6. She goes to the movies Mondays.
[Ae both okay? Can we delete 'on'?]
One through four are all fine. Using "from" is preferable, but it is implied in three and four, so is often omitted. The same is true with five and six. "on" is implied in number six, but number five is better.
1. Yes, you can omit 'from' in this sentence and say "She is busy Monday to Friday." This sentence indicates that she is busy on all the weekdays from Monday to Friday.
2. Similarly, you can also omit 'from' in this sentence and say "She is busy Monday through Friday." This sentence means the same thing as the previous one, indicating that she is busy on all the weekdays from Monday to Friday.
3. Yes, you can omit 'from' in this sentence as well and say "She is busy Monday to Friday." This sentence actually has the same meaning as sentence 1, indicating that she is busy on all the weekdays from Monday to Friday.
4. Again, you can omit 'from' in this sentence too and say "She is busy Monday through Friday." This sentence has the same meaning as sentence 2, indicating that she is busy on all the weekdays from Monday to Friday.
Regarding sentences 5 and 6:
5. The sentence "She goes to the movies on Mondays" is grammatically correct. In this sentence, the word "on" is necessary to show that she goes to the movies specifically on Mondays, indicating a recurring action.
6. However, "She goes to the movies Mondays" is not a complete sentence because it lacks the necessary preposition "on." To make it grammatically correct, you would need to include the preposition and say "She goes to the movies on Mondays."