I had thought that Japanese learners in overseas would easily read Japanese sentences filled with hiragana rather than ones filled with kanji until I joined the LangCorrect community, but it waisn't true. I had thought that Japanese learners overseas would easily read Japanese sentences filled with hiragana rather than ones filled with kanji until I joined the LangCorrect community, but it isn't true.

Past tense when describing something from a point of view set in the past is often fine, but here the present tense makes more sense to me because it's implicitly describing what you believe now.

I had thoughtused to think that Japanese learners in overseas wcould easily read Japanese sentences filled with hiragana (rather than ones filled with kanji until). But when I joined LangCorrect community, but itI learned that this wasn't truhe case. I used to think that Japanese learners overseas could easily read Japanese sentences filled with hiragana (rather than ones filled with kanji). But when I joined LangCorrect community, I learned that this wasn't the case.

I broke this up into two sentences because what you had was rather long. Always "overseas," never "in overseas." I put "rather than ones filled with kanji" in parentheses because it is what I would call an "aside," like a note to the reader in case they don't know the difference. You could also end with "but this wasn't true." I wrote "this wasn't the case" instead because it's just a slight bit more natural, at least to my ear.

I had thought that Japanese learners in overseas would easily read Japanese sentences filled with hiragana rather than ones filled with kanji until I joined the LangCorrect community, but it wasn't true. I thought that Japanese learners overseas would easily read Japanese sentences filled with hiragana rather than ones filled with kanji until I joined the LangCorrect community.

It seemed that there are three reasons why they had the difficulty. It seemed that there are three reasons why they had the difficulty.

"Have the difficulty" may be better given that the rest is written in the present tense.

It seemed that there are three reasons why they hadthat explain theis difficulty. It seemed that there are three reasons that explain this difficulty.

Your sentence is correct except for "they had" – should be present tense, "they have." What I wrote is a bit more concise.

It seemed s to me (that) there are three reasons why they hadve the difficulty. It seems to me (that) there are three reasons why they have the difficulty.

At first, Japanese sentences areit is hard to separate words from ain Japanese sentences since there isare no spaces between words. At first, it is hard to separate words in Japanese sentences since there are no spaces between words.

At first, Japanese sentences are hard to separate words from a sentence, since there is no space between words. At first, Japanese sentences are hard to separate words from a sentence, since there is no space between words.

At first, Japanese sentences areit's hard to separate words from ain Japanese sentences, since there isare no spaces in between words. At first, it's hard to separate words in Japanese sentences, since there are no spaces in between words.

I don't know why they don't have spaces, but it is useful to put as many contents as possible into a limited spacespace with limits on how much one can write, like tTwitter. I don't know why they don't have spaces, but it is useful to put as many content as possible into a space with limits on how much one can write, like Twitter.

"Have" needs a clear object. Or more simply, "character limits," but outside of Twitter and other internet spaces, that may be too specific.

I don't know why they don't have, but it is usefuluse spaces, but I guess it's convenient to put as many contentharacters as possible into a limited space like tTwitter. I don't know why they don't use spaces, but I guess it's convenient to put as many characters as possible into a limited space like Twitter.

"why they don't have" definitely has to take a direct object. "Convenient" is a more precise adjective than "useful" in this case. And Twitter is capitalized because it's a proper noun.

I don't know why they don't havere are no spaces, but it is useful to pufit as many contentswords as possible into a limited space, like tin Twitter. I don't know why there are no spaces, but it is useful to fit as many words as possible into a limited space, like in Twitter.

Second, non-native speakers are hardly able to tell Japanese particles, "joshi," from nouns, verbs, and adjectives. Second, non-native speakers are hardly able to tell Japanese particles, "joshi," from nouns, verbs, and adjectives.

Second, non-native speakers are hardly able to tell Japanese particles ("joshi") from nouns, verbs, and adjectives. Second, non-native speakers are hardly able to tell Japanese particles ("joshi") from nouns, verbs, and adjectives.

Japanese particles are vague and vary depending on the context. Japanese particles are vague and vary depending on the context.

Japanese particles are vague and vary depending on the context. Japanese particles are vague and vary depending on the context.

Unfortunately, it determines how you (including Japanese people) have a good command of Japanese even if you have a lot of vocabulary. Unfortunately, it determines how you (including Japanese people) have a good command of Japanese even if you have a lot of vocabulary.

This sentence is a little unclear. Do you mean that the use of Japanese particles shows if a person does or doesn't have a good command of the language? If so, I'd say it like this: "Even if you have a rich vocabulary, you need to be able to use particles in order to have a good command of the Japanese language. This is the case for native and non-native speakers alike."

Unfortunately, ithat determines how you (includinggood of a command of Japanese speople) have a good command of Japanese even if you haveakers (including native speakers) have, even if they still posess a lot of vocabulary. Unfortunately, that determines how good of a command of Japanese speakers (including native speakers) have, even if they still posess a lot of vocabulary.

I've altered this sentence quite a bit in an attempt to make it sound more natural, let me know if you need an explanation.

Finally, it's hard to figure out the meaning of words from spelling alone. Finally, it's hard to figure out the meaning of words from spelling alone.

Or rathern the other hand, you can easily look words written in kanji up in a dictionary. On the other hand, you can easily look words written in kanji up in a dictionary.

Or rathern the other hand, you can easily look words written in kanji up in a dictionary. On the other hand, you can easily look words written in kanji up in a dictionary.

I'm going to talk about the same difficulties in English at next post. I'm going to talk about the same difficulties in English at next post.

"Similar difficulties" may be better, because they're not necessarily the same. But this depends on the overall point that you want to make as well.

I'm going to talk about the same difficulties in English atin my next post. I'm going to talk about the same difficulties in English in my next post.

I'm going to talk about the same difficulties in English aton my next post. I'm going to talk about the same difficulties in English on my next post.