先生は英語がわかります。
- The teacher understands English.

先生は英語がわかります。 meaning: The teacher understands English.

The basic sentence structure in Japanese follows Subject-Object-Verb (SOV) order. This differs from English's Subject-Verb-Object (SVO) order. Let's break down the sentence: ⚫︎ 先生 (sensei) - This is the subject of the sentence, meaning "teacher." ⚫︎ は (wa) - This is the topic marker particle. It indicates the topic of the sentence. In this case, it indicates what the sentence is *about* (the teacher). ⚫︎ 英語 (eigo) - This is the object, meaning "English." ⚫︎ が (ga) - This is the subject marker particle, but here, it marks the *object* of understanding. When using the verb わかります (wakarimasu), which means "to understand," が (ga) is used instead of を (o) which is usually used as an object marker particle. ⚫︎ わかります (wakarimasu) - This is the verb, meaning "understands" or "knows." It's in the polite form.

Particles are essential to Japanese grammar. They indicate the grammatical function of words in a sentence. ⚫︎ は (wa) - The topic marker. It indicates the topic of the sentence. It can also be thought of as "as for..." or "speaking of...". ⚫︎ が (ga) - The subject marker. When used with verbs like わかります (wakarimasu), it marks the object of understanding. You can also use this marker for emphasis. ⚫︎ The key difference here is that は (wa) introduces the overall topic, while が (ga) marks the *specific* item or the ability someone has in this case.

Japanese verbs conjugate depending on formality and tense. ⚫︎ わかります (wakarimasu) is the polite present/future affirmative form of the verb わかる (wakaru), meaning "to understand" or "to know." ⚫︎ The plain form of わかる is used in less formal situations. ⚫︎ The negative form is わかりません (wakarimasen) meaning "does not understand" or "does not know". ⚫︎ Knowing how to conjugate verbs is fundamental to forming correct Japanese sentences.

わかります (wakarimasu) is frequently used with either: ⚫︎ Showing that someone understands or possesses knowledge of something, like a language, a subject, or information. The topic is introduced using は (wa) and what someone understands is marked using が (ga). ⚫︎ The expression works the same way to indicate abilities. ⚫︎ This sentence pattern focuses on describing a person's capability.

Understanding the subject-object relationship in Japanese is key to forming correct sentences. ⚫︎ In the given sentence, 先生 (sensei) is the topic, and 英語 (eigo) is the object of understanding. The particle が (ga) connects the ability with what the teacher understands. ⚫︎ Different sentence patterns will use other particle combinations, and understanding how these particles relate to each other will improve your sentence-building abilities.