INeedToStudy.com
I need to study, in five languages
The sentence, how to say it, and the version a native speaker would actually use — which in most of these is not the literal one.
The literal translation is rarely the one you want
English says "I need to study". Spanish and Italian reach for "I have to", French for "I must revise", Japanese for a double negative that works out as "if I do not study, it will not do". Each page gives both the word-for-word version and the one people say, because knowing only the first is how you end up correct and slightly strange.
Learn the pattern, not the sentence
"I need to X" is one construction per language, and swapping the verb gives you a hundred more sentences for free. Necesito dormir, je dois partir, 食べなきゃ. Each page shows the shape rather than only the example.
Then study the words
Vocabulary is the one subject where flashcards are not a study aid but the method itself. Every language here has free public sets — the verbs, the everyday phrases, and the alphabet where there is one to learn.