Essential english idioms

t o p a y a t t e n t i o n ( t o ) : to look at and listen to someone while they are speaking, to concentrate 
- Please pay attention to me while I'm speaking to you! 
- You'll have to pay more attention in class if you want to get a good grade. 
t o b r u s h u p o n s o m e t h i n g : to review something in order to refresh one's memory
- Before I traveled to Mexico, I brushed up on my Spanish; I haven't practiced it since high school. 
- In order to take that advanced mathematics class, Sidney will have to brush up on his algebra. 
over and over (ag a i n ) : repeatedly (also: t i m e a f t e r t i m e , t i m e a n d a g a i n )
- The actress studied her lines in the movie over and over until she knew them well. 
- Children have difficulty remembering rules, so it's often necessary to repeat them over and over again. 
- Time and again I have to remind Bobby to put on his seatbelt in the car. 
t o w e a r o u t : to use something until it has no value or worth anymore, to make useless through wear (S) 
- When I wear out these shoes, I'll have to buy some that last longer. 
- What do you do with your clothes after you wear them out? 
t o t h r o w a w a y : to discard, to dispose of (S)
- I generally throw away my clothes when I wear them out. 
- Don't throw the magazines away; I haven't read them yet. 
t o f a l l i n l o v e : to begin to love
This idiom is used with the expression at first sight to indicate a sudden interest in love. 
- Ben and Sal fell in love in high school, and got married after graduation. 
- Have you ever fallen in love at first sight? 
t o g o o u t : to stop functioning; to stop burning; to leave home or work (also: t o s t e p o u t ) 
- The lights went out all over the city because of an electrical problem. 
- The campers didn't have to put out the fire because it went out by itself. 
- Gary isn't here right now; he went out to the store for a moment. 
- I have to step out of the office briefly to pick up a newspaper.