I advise him to stop wasting money on lottery.

Rewrite the sentence: I advise him to stop wasting money on lottery.

The sentence “I advise him to stop wasting money on lottery” can be rewritten as “He ought to stop wasting money on lottery.”

The modal verb “ought to” is used to express a strong recommendation or obligation. It is similar to the modal verb “should,” but it is stronger. In this case, the speaker is strongly recommending that the man stop wasting money on the lottery.

Here is an example of how the two sentences could be used in a conversation:

Person A: I’m worried about my friend. He’s spending all of his money on the lottery. Person B: You should talk to him about it. He ought to stop wasting money on lottery.

The second sentence is more forceful and expresses a stronger sense of obligation.