午前中は

in the morning

→ 午前中
phrase Uncommon #18,840
in the morning Refers to the morning period, generally before noon. The は marks the morning as the topic and can add a contrast with other times of day.
JA: 午前中は図書館で勉強します。
EN: I study at the library in the morning.

午前中はずっと読んでた

I spent the whole morning reading a book.

午前中は家事

I do housework in the morning.

— 大人は判ってくれない (1959)

彼は午前中は決して事務所にいません

He is never in the office in the morning.

午前中は就職面接があるの

I have a job interview in the morning.

午前中はずっと家にいた

Were you home all morning?

午前中は家にいます

I'll be home in the morning.

トム午前中はいつもここに居る

Tom is always here in the morning.

午前中は仕事はしないよ

I don't work in the mornings.

午前中は在宅の予定です

I’m planning to work from home this morning.