'to put across' means to explain or to express something.
- We have to put the message across a little bit more clearly.
- Not a very good presentation. He didn't put his ideas across very well at all.
'to put aside' means to save money
- He's got enough money. He has put some aside.
- I've put aside £100 a month for over a year.
'to put at' means to roughly calculate a cost or figure.
- The first estimate put the damage at about £10 000.
- I think he's the same age as my father. I would put him at 50.
'to put away' means to replace something in the place it is normally kept.
- Can you put all your toys away please, darling?
- I've put the clean clothes away except your shirts. I don't know where to put them.
'to put back' means to return something to its original place.
- I put the books back on the shelf after I had looked at them.
- When you have finished, can you put everything back, please?
'to put back' can also mean to change the time of an event until a later time.
- I can't make it on Thursday. Can we put it back until Friday?
- My appointment has been put back until next month.
'to put behind' means to try to forget about something unpleasant.
- I've forgotten all about it. I've put it behind me.
- You have to put everything behind you and move on with your life.
'to put down' means to stop carrying or holding something.
- My bag was heavy so I put it down on the floor.
- Don't put your cup down there. It will leave a mark on the table.
'to put down' can also mean to criticize someone or their ideas.
- He's always criticizing, always putting people down.
- You never support me. You are always putting me down.
'to put down' the phone means to end a phone call.
- I was so angry, I just put the phone down on him.
- After I put the phone down, I remembered why I'd called you.