Grammar
N3 connective

So much that 〜あまり

Meaning

"So much ~ that ~", "out of excessive ~" — an excess of feeling causes the result.

Formation

Notes

The cause is an excess of emotion or effort — 心配, 驚き, 嬉しさ — and the result is usually unwanted. Written register. あまりに(も)placed before an adjective is a different, everyday use: あまりに高い ("far too expensive").

Examples

I was so worried that I could not sleep.

Breakdown
worry out of excessive could not sleep

I was so astonished that I could not even speak.

Breakdown
astonishment out of excessive no voice came out

He worked so hard that he ruined his health.

Breakdown
overworked so much that ruined his health

I was so happy that tears came.

Breakdown
happiness out of excessive tears came

I was so nervous that I could not say anything.

Breakdown
nervousness out of excessive could not speak

⚠️ Often confused with

Because of (blame) 〜せいで

Assigns blame for a bad outcome — "because of ~", "thanks to ~ (sarcastic)".

Thanks to 〜おかげで

Credits a good outcome — "thanks to ~", "owing to ~".

Because (excuse) 〜ものだから

Offers a reason as an excuse or apology — "it's just that ~", "because ~, you see".

Merely because 〜ばかりに

"Just because ~", "simply on account of ~" — one small cause led to a bad outcome.