っけ? is a very casual way of asking a question to confirm something you vaguely remember. It is rare to use it in a written passage.
~だらけ
~だらけ is usually used in a negative concept meaning “full of something unwanted” or “covered with something undesirable.” Check the usage here.
~てたまらない
たまらない is used to describe something that is unbearable or irresistible. It is very often used with the てform of an adjective.
~てすむ/~ですむ
すむ(済む) has a few meanings but if it is used after a てform verb/adjective or a noun + で, ~て/で すむ means “to be settled with/by ~” or “~ is enough to…”
~ため(に)(cause/reason)
We have learned ~ため(に) to express a purpose before but today’s ~ため(に) is for describing a reason or cause. Check out examples here.
~たまえ
~たまえ is a rather old fashioned expression used for a request. I hear ~たまえ used in prayers often but I don’t hear it in everyday conversations very often.
~たはず
~たはず describes an action which should have taken place but actually didn’t and ~たはず often implies the speakers surprise or regret.
~たところ
~たところ is an expression used to specify a time/occasion in the past when the speaker discovered something unexpected or contradictory to their anticipation.
~たつもり
つもり means an “intention”, but if つもり is used with a past tense verb, ~たつもり can express an assumption or conviction which may not necessarily true or real.
~たことにする
~たことにする a pattern used to intentionally make a false statement about something in the past: “not actually ~ but I will pretend ~.”
~だけじゃなく/~だけでなく
~だけじゃなく (casual) / ~だけでなく (formal) means “not only ~” so inevitably a “but also” part which is indicated with the particle も follows.
~てごらん(なさい)
~てごらん or ~てごらんなさい is a gentle way to suggest an action to somebody who is junior to you such as your children, students, etc.
~たきり・・・(ない)
~たきり・・・(ない) means after the action of the たform verb is completed the condition described in the second half of the sentence is continuing.
~たいものだ/~たいものです
~たいものだ/~たいものです is a variation of ~たい(です) but it is used for a wish that is difficult to fulfill or something you have longed for for a long time.
~そうにみえる
~そうにみえる is used to describe your own opinion based on the appearance of somebody else or an external condition. Check more example sentences here.
~そうになる/そうになった
~そうになる is used when something out of a speaker’s control is about to happen. It is often used in the past tense to describe something that almost happened.
~そうにない/そうもない/そうにもない
~そうにない, ~そうもない and ~そうにもない are used when you describe something that is unlikely to happen. This post explains how to use them and subtle differences among them
~そうにする/~そうにしている
~そうにする/~そうにしている means “to look ~” or “to seem ~”. ~そうにする/~そうにしている follows an adjective stem which describes a person’s feeling or sense.
~だけでは…ない
~だけでは…ない is an expression for saying ~ is not sufficient to get an expected result. A potential (form) verb is often used in the latter half.
~ごとに
~ごとに follows a noun or a dictionary form verb and means “every ~” or “every time ~.” Differences between ~ごとに and ~たびに are explained at the bottom of this page.