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The apple is red.

Ringo wa akai desu.

りんご apple (topic) は topic marker 赤あかい red です。 polite “is”

In real life (guy speech):
Ringo, akai na.

りんご、赤あかいな。

Explanation: Basic “X is Y” sentence. りんご (ringo) = apple; は (wa) marks the topic; 赤い (akai) = red (i-adjective); です (desu) is the polite ending. Pattern: Noun は Adjective です. Guy speech often drops は/です and may end with な (rough/casual) instead of softer よ/ね.
It is Ryuta's apple.

Ryuta no ringo desu.

龍太りゅうた Ryuta の possessive りんご apple です。 polite “is”

In real life (guy speech):
Sore wa Ryuta no ringo da.

それは龍太りゅうたのりんごだ。

Explanation: Possession with の (no) — like ’s in English. 龍太の (Ryuta no) = Ryuta’s; りんご (ringo) = apple; です (desu) = is. Pattern: Person の Noun です = “It is Person’s Noun.” Guy speech often adds それ (“that”) and ends with blunt casual だ.
I give Kota the apple.

Watashi wa Kota ni ringo o agemasu.

私わたし I (topic) は topic marker 航太こうた Kota に to (receiver) りんご apple を object あげます。 give

In real life (guy speech):
Ore, Kota ni ringo yaru.

俺おれ、航太こうたにりんごやる。

Explanation: Giving something to someone. 私 (watashi) = I; は (wa) = topic; 航太に (Kota ni) = to Kota (receiver); りんごを (ringo o) = the apple (object); あげます (agemasu) = give (polite). Particles: に = to (person), を = direct object. Guy speech often uses 俺 and やる (rougher “give”) instead of 私は…あげます, and may drop を.
We give him the apple.

Watashitachi wa kare ni ringo o agemasu.

私わたしたち we (topic) は topic marker 彼かれ him に to (receiver) りんご apple を object あげます。 give

In real life (guy speech):
Ore-tachi, kare ni ringo yaru.

俺おれたち、彼かれにりんごやる。

Explanation: Same give-pattern as #3, but with plurals/pronouns. 私たち (watashitachi) = we (-tachi makes a group); 彼 (kare) = he / him; に marks the receiver; を marks the thing given; あげます = give. Guy speech: 俺たち + やる. Names are still preferred over 彼 when possible.
He gives it to Arai.

Kare wa sore o Arai ni agemasu.

彼かれ he (topic) は topic marker それ it を object 新井あらい Arai に to (receiver) あげます。 give

In real life (guy speech):
Sore o Arai ni yaru.

それを新井あらいにやる。

Explanation: Pronouns instead of “apple.” 彼 (kare) = he; それ (sore) = it / that (thing near the listener or already known); を marks sore as the object; 新井に = to Arai; あげます = give. Word order can put object before receiver. Guy speech drops 彼は when clear and may use やる.
She gives it to him.

Kanojo wa sore o kare ni agemasu.

彼女かのじょ she (topic) は topic marker それ it を object 彼かれ him に to (receiver) あげます。 give

In real life (guy speech):
Sore o kare ni yaru.

それを彼かれにやる。

Explanation: Same structure as #5 with different people. 彼女 (kanojo) = she; それ (sore) = it; 彼 (kare) = him; に = to; あげます = give. Full pronoun sentence: giver は · thing を · person に · verb. Guy speech drops 彼女は when clear and may use やる.
Is the apple red?

Ringo wa akai desu ka?

りんご apple (topic) は topic marker 赤あかい red です polite “is” か question ？ ?

In real life (guy speech):
Ringo, akai ka?

りんご、赤あかいか？

Explanation: Yes/no question. Take the statement from #1 and add か (ka) at the end. No need to change word order. Rising tone or か marks the question. Answer with はい、赤いです (yes) or いいえ、… (no). Guy questions often keep a blunt か, or just rising tone: りんご、赤い？
The apples are red.

Ringo wa akai desu.

りんご apple (topic) は topic marker 赤あかい red です。 polite “is”

In real life (guy speech):
Ringo, akai na.

りんご、赤あかいな。

Explanation: Same Japanese as #1. Japanese often does not mark plural on nouns — ringo can mean “apple” or “apples.” Context (or words like たくさん, りんごと, numbers + counters) shows singular vs plural. English needs “are”; Japanese stays the same.
I must give it to him.

Watashi wa kare ni sore o agenakereba narimasen.

私わたし I (topic) は topic marker 彼かれ him に to (receiver) それ it を object あげなければなりません。 must give

In real life (guy speech):
Ore, kare ni sore yaranakya.

俺おれ、彼かれにそれやらなきゃ。

Explanation: Obligation (“must / have to”). Verb stem + なければなりません (nakereba narimasen) = “if not …, it won’t do” → must. Here あげなければなりません = must give (from あげる). Particles still mark 彼に (to him) and それを (it). Guy shortcut: 俺…やらなきゃ (rough やる + なきゃ).
I want to give it to her.

Kanojo ni agetai.

彼女かのじょ her に to (receiver) あげたい。 want to give

In real life (guy speech):
Ore, kanojo ni agetai.

俺おれ、彼女かのじょにあげたい。

Explanation: Desire with 〜たい (-tai). Verb stem of あげる → あげたい (agetai) = want to give. 彼女に (kanojo ni) = to her. Subject “I” and object “it” are often dropped when clear from context. Casual form (no です).
I'm going to know tomorrow.

Ashita wakaru yo.

明日あした tomorrow 分わかる find out よ。 emphasis

In real life (guy speech):
Ashita wakaru. / Ore, ashita wakaru yo.

俺おれ、明日あした分わかるよ。

Polite guy speech often still uses 僕: 僕は明日分かります。

Explanation: Future meaning from context, not a special tense. 明日 (ashita) = tomorrow; 分かる (wakaru) = understand / find out / “get it.” More natural here than 知る for “I’ll know tomorrow.” Japanese present form covers present and near future. よ (yo) softens or asserts.
I can't eat the apple.

Ringo ga taberarenai.

りんご apple が subject marker 食たべられない。 can’t eat

In real life (guy speech):
Ore, ringo taberarenai.

俺おれ、りんご食たべられない。

Explanation: Potential (can/can’t) form. 食べる (taberu) → 食べられる (taberareru) = can eat; negative 食べられない = cannot eat. With potential, the object often takes が (ga) instead of を: りんごが. Casual; “I” is omitted.
I ate the apple.

Watashi wa ringo o tabemashita.

私わたし I (topic) は topic marker りんご apple を object 食たべました。 ate

In real life (guy speech):
Ore, ringo kutta.

俺おれ、りんご食くった。

食った (kutta) is rough guy past of 食べる. Softer guy version: 俺、りんご食べた。

Explanation: Past polite tense. 食べます (tabemasu) → 食べました (tabemashita) = ate. 私は = I (topic); りんごを = the apple (object); ました marks completed past action politely. Guy casual past is often 食った (kutta) or softer 食べた, with 俺 and particles dropped or kept lightly.