Read each pattern and its example, then write your own sentence on the line.
〜ものを V/i-adj plain + ものを；na-adj な + ものを；N な + ものを
Expresses regret or reproach: something good could easily have happened, but it didn't. Often follows a conditional and trails off. Written or emotional spoken register.
早く言ってくれれば手伝ったものを。 If you'd told me sooner, I would have helped you.
〜（ん）がため（に） V-nai stem + んがため（に）；する→せんがため
States a strong, deliberate purpose: 'in order to'. Stiff, literary or formal-written register; not used in casual speech.
生き延びんがために、彼らは故郷を捨てた。 In order to survive, they abandoned their hometown.
〜ゆえ（に） N（の）ゆえに／V・i-adj plain + ゆえに／na-adj な・である + ゆえに
Formal, written 'because of / owing to'. Same meaning as から/ので but restricted to essays, notices and speeches.
経験が浅いゆえに、判断を誤ることもある。 Because he is inexperienced, he sometimes misjudges things.
〜をおいて N + をおいて（他に）〜ない
'There is no one/nothing other than X'. Used with a negative to single out the only suitable option; formal, praising tone.
この仕事を任せられるのは彼をおいて他にいない。 There is no one but him we can entrust this job to.
〜を限りに N（時を表す語）+ を限りに
Marks a time as the final point: 'as of / with today, this month…, it ends'. Formal, common in announcements.
今月を限りに、この店は閉店いたします。 As of the end of this month, this shop will close.
〜を皮切りに N + を皮切りに（して）／を皮切りとして
'Starting with X', where X is the first of a series that then expands or spreads. Written and news register.
東京公演を皮切りに、全国ツアーが始まる。 Starting with the Tokyo show, the nationwide tour begins.