Read each pattern and its example, then write your own sentence on the line.
〜かたわら V-dict + かたわら ／ N + の + かたわら
Describes a secondary long-term activity carried on alongside one's main occupation. Formal, written register.
彼は大学で教えるかたわら、小説を書いている。 Alongside teaching at a university, he writes novels.
〜がてら V-masu stem + がてら ／ N（動作性）+ がてら
Doing B while taking the chance offered by A; the two happen at once. Slightly formal but used in everyday speech about outings.
散歩がてら、駅前の書店に寄った。 On my walk, I stopped by the bookshop in front of the station.
〜が早いか V-dict + が早いか（後件は過去形）
The second action follows the first almost instantly. Written, narrative register; used for past, surprising events.
ベルが鳴るが早いか、彼は教室を飛び出した。 No sooner had the bell rung than he dashed out of the classroom.
〜が最後 / 〜たら最後 V-ta + が最後 ／ V-ta + ら最後
Once the action happens, a bad or unstoppable result inevitably follows. Emphatic; 〜たら最後 is the more colloquial variant.
彼は一度話し始めたが最後、止まらない。 Once he starts talking, there's no stopping him.
〜限りだ i-adj + 限りだ ／ na-adj + な + 限りだ
States that the speaker feels an emotion to the utmost degree. Formal-ish written or careful speech; only with emotion adjectives.
旧友に再会できて、嬉しい限りだ。 I couldn't be happier to have met my old friend again.
〜きらいがある V-dict + きらいがある ／ N + の + きらいがある
Points out an undesirable tendency someone or something has. Formal, mildly critical; common in analysis and commentary.
彼は何事も悲観的に考えるきらいがある。 He has a tendency to think about everything pessimistically.