Form to express “let/allow” or “make/force” (somebody) “…do something”. In other words, express causing something/somebody to do something.

Formula: [Causer]が + [Target]が・を + Vさせる

Building §

• Verb end (u) -> a + せる
• exception - godan verbs: る -> させる

Particles §

• Particle に/Particle を: Indicates the target that was allowed/forced to do something
• Particle が: Indicates the subject (or doer), that made somebody do something

When to use に or を §

• に: when there’s another を already
• を: tends to imply “make/force”

Example §

• 飲む -> 私がミラさんに飲ませる (= I let/make Mr. Miller drink) (== I cause drinking to Mr. Miller)
• 食べる → 私がミラさんに食べされる (= I let/make Mr. Miller eat) (== I cause eating to Mr. Miller)