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kyou no tenki ha warui desu.

今日きょう　の　天気てんき　は　悪わるい　です。kyou no tenki ha warui desu.
The weather is bad today.
FromLesson 6inHardcore Japanese
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Questions & Answers about kyou no tenki ha warui desu.

What does 今日 mean and how do you pronounce it?
今日 means “today” and is pronounced きょう.
Why is の used between 今日 and 天気?
The particle の links two nouns, showing a relationship like possession or description. In 今日の天気, it literally means “today’s weather.” The first noun (今日) modifies the second (天気).
What is the role of は after 天気?
は marks 天気 as the topic of the sentence. Japanese often follows the pattern [Topic] は [Comment], so here you’re saying “As for the weather, (it) is bad.”
What kind of word is 悪い and why does it end with い?
悪い is an i-adjective (also called an い-adjective). I-adjectives end in い in their plain form and can directly serve as predicates (e.g. “is bad”) or modify nouns (e.g. 悪い天気, “bad weather”).
Why is です used at the end, and can it be omitted?
です is the polite copula, making the sentence polite. In casual speech you can drop です and say 今日の天気は悪い.
Could you use が instead of は in this sentence?
Yes. 今日の天気が悪い is also correct. Using が marks 天気 as the subject, emphasizing “there is bad weather,” whereas は treats “the weather” as the general topic you’re commenting on.
How would you ask “How is the weather today?” in Japanese?
You would say 今日の天気はどうですか. Here どう means “how,” and ですか turns it into a polite question.

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“How do verb conjugations work in Japanese?”
Japanese verbs conjugate based on tense, politeness, and mood. For example, the polite present form adds ‑ます to the verb stem, while the past tense uses ‑ました. Unlike English, Japanese verbs don't change based on the subject — the same form works for "I", "you", and "they".

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