1.I must to go to the bank at lunchtime to get some money.
2. You should to stop eating junk food.
3.They didnt have been to work because it was their day off.
4. I wasnt be able to call you because your phone was engaged.
5.Dont let me forget, i must have to phone my parents tonight.
6. I am used to be able to play the paino when i was younger.
7.He didnt need to have clean the kitchen because Rick had already done it.
8. Need i to go with them?
9.We dont ought have to go if you dont want to.
10.They might have to caught the train ij Joan had been ready on time.

1. I must go to the bank at lunchtime to get some money.
- The correct form is "I must go" without the word "to" after "must." "Must" already implies the necessity or obligation to go, so the additional word "to" is not needed.

2. You should stop eating junk food.
- The correct form is "You should" without the word "to" after "should." "Should" already implies the advice or recommendation to stop eating junk food, so the additional word "to" is not needed.

3. They didn't go to work because it was their day off.
- The correct form is "They didn't go" instead of "They didn't have been." "Have been" is used to talk about completed actions in the past, but in this case, the action is not going to work, which is an action in progress.

4. I wasn't able to call you because your phone was engaged.
- The correct form is "I wasn't able" without the word "be" after "wasn't." "Wasn't able" already expresses the inability to call, so the additional word "be" is not needed.

5. Don't let me forget, I must phone my parents tonight.
- The correct form is "I must phone" without the word "have" after "must." "Must" already expresses the obligation or necessity to phone, so the additional word "have" is not needed.

6. I am used to playing the piano when I was younger.
- The correct form is "I am used to playing" instead of "I am used to be able to play." "Used to" indicates being familiar with a past habit or action, and "playing" is the correct form to follow it. Also, the verb tense should be consistent, so "when I was younger" should be changed to "when I was young."

7. He didn't need to clean the kitchen because Rick had already done it.
- The correct form is "He didn't need to clean" instead of "He didn't need to have clean." "Need to" already indicates the lack of necessity to clean, so the additional verb form "have clean" is not needed.

8. Do I need to go with them?
- The correct form is "Do I need to go" instead of "Need I to go." When forming a question, the auxiliary verb "do" is used before the subject, followed by the main verb "need" without the additional word "to."

9. We don't have to go if you don't want to.
- The correct form is "We don't have to go" without the word "ought" before "to go." "Have to" already expresses the lack of obligation to go, so the additional verb form "ought to go" is not needed.

10. They might have caught the train if Joan had been ready on time.
- The correct form is "They might have caught" instead of "They might have to caught." "Might have caught" indicates a possibility or uncertainty of having caught the train. Also, the word "ij" should be corrected to "if" in the sentence.