must,ought to,have,have to分別

Feeling good about yourselfDoyou feel like you have to lose weight? Do you think that you must have a perfect figure to be happy? If so, think again! The truth is that you don't have to look like a fashion model to feel good about yourself. You just need to develop four simple habits.

1. Eat sensibly
If you want to feel good about yourself, you should not eat bad food! Instead of junk food, you should eat fruit and vegetables. Many people believe is important to eat meat or fish every day, but you don't have to do this.However, if you don’t eat meat or fish, you have to eat some other source of protein, which is an essential part of your diet.

2. Sleep well
Should you sleep for at least eight hours every night? Yes. Unfortunately,many teenagers stay up too late. You must not do this! It’s very important that you give your body enough time to rest.
3. Do exercise
Do you have to go to the gym every day? Luckily, the answer is ‘no’. To stay fit, you have to do two or three hours of exercise a week, but this is only a suggestion. You can do more if you prefer!
4. Stop worrying
You can worry all you like, but it won’t solve your problems. If you want to feel good about yourself, you should try to relax and enjoy life.
When to use:
ought to, should, have to and must are of similar meanings but with varying degree of urgency. We use 'ought to' when we want to make a suggestion. 'Should' has a stronger meaning than 'ought to'.
'Must' is used when it is very necessary to do something. 'Have to' is sometimes used in place of 'must' and carries a slightly less emphasis in necessity.

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