Differences between English and Japanese
English is quite different from Japanese. English is written in the Roman alphabet, however, Japanese is written in two different syllabaries, Hiragana and Katakana, as well as characters called Kanji. Moreover, grammar is also different. For example, the Verb comes after the subject in English, like this: Subject / Verb / (Adjective) / Object / (Adverb). In contrast, objective comes after subject in Japanese, like this: Subject / (Adjective) / Object / (Adverb) / Verb. It's interesting.
I understood everything that you were trying to say, which is good, so I just made some minor changes to help you improve your writing.
You should start always start a paragraph with the noun that you are discussing (English), instead of a pronoun (it's). This makes sure that the reader knows exactly what you're talking about. Alternatively, you could have also started your paragraph with "Japanese is quite different from English".
I corrected "alphabet" to "Roman alphabet" because "alphabet" is a bit vague and can refer to any alphabet, while "Roman alphabet" is more specific.
I also changed "types of languages" to "syllabaries".
A syllabary is a set of written characters representing syllables and (in some languages or stages of writing) serving the purpose of an alphabet.
The word syllabary is not a common word, and most English speaking people will probably be unfamiliar with it's meaning, but it more accurately describes what you would call hiragana and katakana in English.
I hope this helps you.
Differences between English and Japanese
Japanese and English are quite different. English is written with one alphabet. However (On the other hand), Japanese is written with three different systems: Hiragana, Katakana, and Kanji. Moreover, the grammar is also different. For example in English, the verb comes after the subject in this way: Subject / Verb / (Adjective) / Object / (Adverb). In contrast, the objective comes after the subject in Japanese in this way: Subject / (Adjective) / Object / (Adverb) / Verb. It's interesting.