Learn Hardcore Chinese: Tā jīntiān chuān lánsè de yīfu, zài gōngsī hěn héshì. - He’s wearing blue clothes today, which are very appropriate at the company.

Breakdown of Tā jīntiān chuān lánsè de yīfu, zài gōngsī hěn héshì.

Why is there no 了 or 是? How do we know it’s “is wearing” and not “wore”?

Time words like 今天 set the timeframe; Chinese doesn’t mark tense like English.
他今天穿蓝色的衣服 naturally describes today’s current outfit; no 是 is needed.
If you add 了 (他今天穿了蓝色的衣服), you highlight the completed action of putting it on.
To emphasize an ongoing state, use 着: 他今天穿着蓝色的衣服.

Does 很 in 很合适 really mean “very”? Is it required?

With predicate adjectives, 很 often works as a neutral linker, so 很合适 ≈ “appropriate.”
For strong emphasis, use 非常/特别/挺: 非常合适.
Omitting 很 (在公司合适) can sound abrupt unless it’s contrastive.

What’s the difference between 合适 and 适合?

Why is there 的 after 蓝色? Why not 地/得?