Ashita shiken ga aru noni, kare wa tekisutobukku o yomu desura shinai.
Even though we have a test tomorrow, he doesn't even read the textbook.
この問題は専門家ですら解けない。
Kono mondai wa senmonka desura tokenai.
Even an expert can't solve this problem.
彼女は最後のスピーチですら泣いてしまった。
Kanojo wa saigo no supīchi desura naite shimatta.
She ended up crying, even during the last speech.
彼は毎日勉強しますが、基本の漢字ですら覚えられない。
Kare wa mainichi benkyou shimasu ga, kihon no kanji desura oboerarenai.
He studies every day, but can't even remember basic Kanji.
Long explanation:
The noun + ですら pattern is used to emphasize 'even', 'even if', or 'as much as'. This grammar point is quite formal and is generally used in written language or formal speech.
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