In these sentences above, "I have many Japanese friends in school" or "I said 'Excuse me, I want this'" is not negated, right?
Ok "negate" is the wrong word. Maybe the better word would be "contrast". I will try to explain.
1. In the example with the family, if you say "the host family is kind, but they talk English with me" is like "my family is kind, but since they only speak English with me, they seem to be less kind". Since you are describing the family directly and assigning it a property ("kind"), the "but" in the end makes it sound like the family is less kind because of the "but". It sounds like that to me, anyway
:
2. Example with friends: I have a lot of friends, but their English is better so they speak English with me. This is a different kind of "but", he just said he has many friends. It is a neutral sentence, he didn't describe his friends. If he puts a "but" after it, he doesn't make the property be less kind/good or whatever. Same with the clerks. If he said "My friends are awesome, but..." it would be like "they are awesome, but not that awesome after all". Or "I love my friends, but... " ... something is gonna follow which will explain why you don't love them that much after all. Because usually if the 1st part of the sentence is positive, the part after "but" will be negative.
My girlfriend is awesome (+), but she costs me too mich money (-)
I love my friends (+), but sometimes they are jerks (-)
My home family is kind (+), but they only speak English with me (-)
You cannot make both parts positive, like "My girlfriend is awesome, but she is kind". I hope you get what I mean.
Another question: how are you doing this? How did you know which text it was, are you a magician? :emoji_astonished: It was a text from a printed book! :emoji_grinning: