Rule 21: ……would rather/sooner + verb + than + verb/noun.
Examples:
I would rather die than beg.
He would rather drink tea than coffee.
Rule 22: ……had better + verb (present form) + ……….
Examples:
I had better ring him at once.
You had better leave the place.
He had better go home.
Rule 23: ……how + to + verb (present form) + …..
Examples:
He doesn’t know how to play cricket.
They knew how to talk.
Do you know how to drink tea?
Rule 24: Without + verb(ing) + (meaningful negative sentence).
Examples:
Without reading more you cannot pass.
Without taking physical exercise we cannot keep our body fit.
He will not be able to write well without writing much.
Rule 25: By + verb(ing) + (meaningful affirmative sentence).
Examples:
By reading more we can learn more.
By drinking clean water you can keep your body fit.
We can get power by eating rice and bread.
Rule 26: ……provided/provided that/providing that/if + (meaningful sentence).
Examples:
I will agree to go providing that my expenses are paid.
He will shine in life provided that he works hard.
The plane will take off in time provided the weather is good.
Rule 27: ……since/as/because + (meaningful sentence).
Examples:
As he behaved rough, he was punished.
Everybody loves him because, he is honest.
Crops did not grow well since there was drought.
Rule 28: ……though/although/in spite of/despite of + (alternative meaningful sentence).
Examples:
Though he is poor, he is honest.
In spite of his poverty, he helps the poor.
Although he is rich, he does not help the poor.
Rule 29: ……unless/if…not + (meaningful affirmative sentence).
Examples:
Unless you read attentively, you will fail.
If you not start at once, you will miss the train.
Rule 30: ……instead of/in lieu of + (meaningful word or sentence).
Examples:
Instead of history he took logic.
The boy bought pen instead of pencils.
He ate fish in lieu of meat.
এই লেকচারের পরের পেইজে যেতে নিচের 
…. তে ক্লিক কর।