Essential english idioms

t o w a i t o n s o m e o n e : to serve in a store or restaurant 
- A very pleasant young clerk waited on me in that shop. 
- The restaurant waitress asked us, "Has anyone waited on you yet?" 
at least : a minimum of, no fewer (or less) than
- I spend at least two hours every night on my studies. 
- Mike claims that he drinks at least a quart of water every day. 
so far : until now, until the present time (also: u p t o n o w , a s of yet )
This idiom is usually used with the present perfect tense. 
- So far, this year has been excellent for business. I hope that the good luck continues. 
- How many idioms have we studied in this book up to now? 
- As of yet, we have not had an answer from him. 
t o t a k e a w a l k , s t r o l l , h i k e , e t c . : to go for a walk, stroll, hike, etc 
A stroll involves slow, easy walking; a hike involves serious, strenuous walking. 
- Last evening we took a walk around the park. 
- It's a fine day. Would you like to take a stroll along Mason Boulevard? 
- Let's take a hike up Cowles Mountain this afternoon. 
t o t a k e a t r i p ( t o ) : to go on a journey, to travel 
- I'm so busy at work that I have no time to take a trip. 
- During the summer holidays, the Thompsons took a trip to Europe. 
t o t r y o n : to wear clothes to check the style or fit before buying (S) 
- He tried on several suits before he picked out a blue one. 
- Why don't you try these shoes on next? 
t o t h i n k o v e r : to consider carefully before deciding (S)
- I'd like to think over your offer first. Then can we talk it over tomorrow? 
- You don't have to give me your decision now. Think it over for a while. 
to take place : to occur, to happen according to plan
- The regular meetings of the committee take place in Constitution Hall. 
- I thought that the celebration was taking place at John's house.