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How to Say ‘I assisted.’ in Japanese

介助をしました。

kaijo o shi mashi ta

[kai-joh oh shee mah-shee tah]

💬 Usage Tip: [〜をしました] is a standard way to describe duties you performed. In interviews, it's a useful simple pattern: [食事介助をしました], [入浴介助をしました].

Phrase Breakdown

介助

kaijo

[kai-joh]

assistance; caregiving support

Help provided to support a person's daily activities.

Example

入浴の介助をしました。

I assisted with bathing.

をしました

o shi mashi ta

did; provided

The polite past form of する. Here it means “did” or “provided” the assistance.

Example

掃除をしました。

I cleaned.

Words in this phrase

o

[oh]

object marker

Marks what the action is done to.

Example

入浴の介助をしました。

I assisted with bathing.

shi

[shee]

do

Stem of する, meaning do or perform.

Example

入浴の介助をしました。

I assisted with bathing.

まし

mashi

[mah-shee]

polite past marker part

Part of the polite past expression ました.

Example

入浴の介助をしました。

I assisted with bathing.

ta

[tah]

past tense marker

Shows the action happened in the past.

Example

入浴の介助をしました。

I assisted with bathing.

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