F1 23 Ai Difficulty Calculator

Can somebody tell me the difference between difficulty and difficulties please? For example, if I say "I have difficulty understanding what he is saying." Why can't I say "I have a difficulty understanding what he is saying." since I am talking about one issue. Same as the word "trouble".

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Hello everyone. I would like to know whether my sentences below are correct. "I have difficulty in/with doing my math homework". "I have difficulty doing my math homework". I have already read other threads about this, but I still don't know whether the prepositions "in" or "with" are always...

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She has difficulty in breathing or She has difficulty with brathing. Which preposition is correct in the examples above?

Hi, I have a question. Is there any difference in meaning between "having difficulty doing sth" and "having difficulty in doing sth" ?

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Have difficulty/difficulties (in) doing something What is syntactically the -ing-phrase in both the versions with and without the preposition? Secondly, does the latter derive form the former?

Do the two expressions mean the same? I have a difficult time understanding them. I have a difficulty understanding them.

Here, have a hard time with / have trouble with / have difficulty with / struggle with are the interchangeable? I think they are similar in the meaning, but I guess there's a subtle difference in nuance.

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have a hard time with / have difficulty with / struggle with

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