to knock one self out: to work very hard (sometimes too hard) to do somethingA reflexive pronoun must divide the idiom. Examples of TO KNOCK ONE SELF OUT She really knocked herself out trying to pass that difficult class. Don’t knock yourself out during practice. Save your strength for the competition later.

to fade away: to diminish gradually in time or distance Examples of TO FADE AWAY The memory of that unpleasant experience has slowly faded away. The music of the band gradually faded away as the parade passed down the street.

to get in/to get on: to enter or to board a vehicleto get in is used for cars; to get on is used for all other forms of transportation. Examples of GET IN It’s impossible to get in the car from the passenger’s side, since Steve’s accident. We need you to get in the game!

to blow up: to inflate, to fill with air; to explode, to destroy (or be destroyed) by explosion Examples of TO BLOW UP Linda must have been pretty angry to blow up at you like that. A storm blew up off the east coast.

to have it in for: to want revenge on, to feel hostile towards (also: to hold a grudge against) Examples of TO HAVE IT IN FOR Martina expects to lose her job because her boss has had it in for her for a long time. The teacher has held a grudge against Al ever since the…

so far: until now, until the present time (also: up to now, as of yet) Examples of  SO FAR “So far I’ve made ten dollars from my lemonade stand,” he said excitedly. Good looks will only take you so far; you need a strong education and lots of experience.