Is there a difference among the following sentences, Writeacher? Thank you.

I included a few other sentences.

He made breakfast himself.
He made breakfast by himself.
He made breakfast on his own.
He made himself breakfast.

1) You shouldn't fuss (not make a fuss) about a common cold.
You oughn't (or ought not) fuss about it.
2) He broke his arm when he was thrown out of his boat/when he fell off his raft (both possible?).
3) He excused himself (to me) for breaking the vase (because he broke the vase is a mistake?).
4) Mary invited me to her house (to her is a mistake?).
5) They are content about their exam result.
6) They are happy with (is a mistake?) exam result
7) If I were you, I would worry (I would be worried is possible?) about a common cold.

The first four sentences are all saying about the same thing -- slightly different phrasing, but the same meaning.

1. I'd use "worry" rather than "fuss" in this context.

2. OK

3. Don't include "to me" -- the rest is fine, including the alternative phrasing.

4. Use "to her house" -- don't omit "house"!

5, 6, and 7 -- all are OK.

Let's go through each sentence and see if there are any differences:

1) "He made breakfast himself." - This means he made breakfast without any assistance.
2) "He made breakfast by himself." - This also means he made breakfast without any assistance. The use of "by" emphasizes that he accomplished it alone.
3) "He made breakfast on his own." - This has the same meaning as the previous two sentences, emphasizing that he did not receive any help.
4) "He made himself breakfast." - This indicates that he made breakfast specifically for himself, as opposed to making it for someone else.

Now let's look at the other sentences:

1) "You shouldn't fuss (not make a fuss) about a common cold."
2) "You oughtn't (or ought not) fuss about it." - Both sentences convey the same meaning, which is that you shouldn't make a big deal or complain about a common cold.

3) "He broke his arm when he was thrown out of his boat/when he fell off his raft." - Both versions are possible and can be used interchangeably.

4) "He excused himself (to me) for breaking the vase (because he broke the vase is a mistake?)." - The sentence "He excused himself for breaking the vase" is correct. Adding "to me" is optional and depends on whether you want to specify who he is apologizing to. "Because he broke the vase" changes the meaning slightly, as it implies a reason for the apology rather than the act of apologizing itself.

5) "Mary invited me to her house (to her is a mistake?)." - The sentence "Mary invited me to her house" is correct. Adding "to her" would be redundant.

6) "They are content about their exam result." - The sentence should be "They are content with their exam result." Using "with" indicates satisfaction or acceptance.

7) "They are happy with (is a mistake?) exam result." - The sentence should be "They are happy with the exam result." Using "with" indicates satisfaction or pleasure.

8) "If I were you, I would worry (I would be worried is possible?) about a common cold." - Both "I would worry" and "I would be worried" are grammatically correct and can be used interchangeably. They convey the same meaning of expressing concern or anxiety about a common cold.