(1) B Relationship: -B Subtract A unless A. I want to marry you unless you buy me a diamond ring. Not to marry you and buy a diamond ring.
(2) Unless A, it doesn't matter. B: -(-B) Push A, that is, B pushes A. Unless you buy me a diamond ring, I won't marry you. Marry you and buy a diamond ring.
Extended data:
Unless it's p, it's not q? For example, we can give an example of marriage, "I won't marry my daughter to you unless you give me 500 thousand."
That is to say, "My daughter marries you" can be deduced as "giving a bride price of 500,000 yuan". The most common problem of old students is that this keyword "no" is part of logical related words and does not represent negative symbols. In other words, "unless P, it is not Q" and "unless P, it is not Q at all".
Unless ... Examples of sentences are as follows:
( 1)? You will never be a failure unless you stop trying.
(2)? Unless you get a negative answer in the first visit, you will have a chance to create a second meeting.
(3)? Unless you want to be first-rate, you are second-rate.
Examples of not making sentences unless ... as follows:
( 1)? You don't know what happiness is unless you have love.
(2)? There will be no failure unless you stop trying.
(3)? Unless it is the stupidest mouse, it will not hide in the cat's ear; But unless you are the smartest cat, you won't search your ears.