How to say how much you know/don't know

 I know
I don't know
   I'm pretty sure   I haven't a clue
   I know it like the back of my hand   I don't know off the top of my head
   I know it by heart   I don't know offhand
   I know it inside out   I've never heard of him
   I'm fairly certain it is   I know next to nothing about it
   I'm positive it is   I haven't the faintest idea


How to talk about an achievement

   Background information   I've always...
   I'd never done ...
   Details   We set up ...
   We decided to organise ..
   Problems   I didn't know what to expect.
   The whole thing was quite a challenge.
   It was tough.
   How it felt   It exceeded my expectations.
   We felt we'd accomplished something.
   It was a fantastic learning experience.
   Results/follow up   I've learnt a lot.
   I'm planning to ..

How to give advice / make recommendations about places

   Saying it's good   It's a must / a must-see.
   It's good value for money.
   Saying it's not so good   It's a bit overrated / overpriced.
   It's not all it's cracked up to be.
   I found it a bit dull / touristy.
   Recommending   If I were you, I'd go to ...
   Make sure you go to ...
   Don't miss ... / You should try ...
   Warning   Watch out for ...
   One thing to be wary of is ...

  How to describe people

    First impressions    She comes across as ... (adjective) ... but once you get to          know her, she's ... (adjective)
    The thing that strikes you about ... is that ... 
    Character - good things and bad things    The thing I (don't) like about ... is ...
    What I (don't) really like about ... is ...
    He's so + (adjective)
    He's such a (+adjective) + person/man, etc.
    He can be a bit ... (negative adjective)

            How to be vague / imprecise

    Give imprecise information about how often something              happens     once in a blue moon
     from time to time
    Give imprecise information about quantity, time and / or            numbers     more or less
     loads of mistakes
     about N-ish
     in an hour or so
    Give imprecise information about things you do / have been      doing     bits and pieces
     that kind of thing
    Give imprecise answers to direct questions     sort of / kind of
     in a way

      How to present a case for something

     It changed ... completely
     It paved the way for ...
     It's made a massive difference to ... 
     It's revolutionised ...
     We shouldn't underestimate ...
     It has had a huge impact on ...

   How to express priorities

     Saying it's very important    My main priority is ...
    The essential thing for me is ...
    This is absolutely vital!
    I couldn't do without ...
     Saying it's not important    I'm not really bothered / concerned about this.
    This isn't a major priority.
    I could do without ...
    

                                         How to describe architecture

     Use superlatives    The Great Pyramid is arguably / probably the most ...
    It is one of Australia's best known, and most photographed ...
    It is thought to be /It is the largest / tallest ... 
   
     Provide details (size / description, etc)    It is built from metal / stones ...
    The base is ...
    Occupying / Covering an area of more than ... metres squared
    It covers ... of ground floor space.
    Standing 134m high / above...
     Describe reason for building / purpose    It was built to celebrate the anniversary / as a memorial for      / in order to / in honour of ...
    Built to house / as office space ...

    How to explain procedures

     Prefacing with a general statement    It can be a bit tricky at first.
    It's pretty straightforward.
    It's really easy.
    It's a piece of cake.
     Sequencing    Firstly ... / The first thing you've got to do is ...
    Then / Secondly ..., / The next step is to + infinitive ...
    Once you do / 've done this ...
    Finally, ...
     Addressing the listener    You do this ... / Do this...
    One does this (formal / usually  written English)
     Conditions / what can go wrong    Without doing this, it won't work.
    If it doesn't work, you should ...
     Checking it's understood    OK? Got it? / Any questions?

                             How to stall for time (when you're asked a difficult question)

    That's a good question.
    Let me see.
    That's tricky.
    I'd have to think about that.
    That's a difficult question.
    Well, ...

                                                            How to describe problems
                           (when something goes wrong with every machines)
   
    It keeps getting jammed.
    I can't get it to make any copies. 
    It's always coming up with the same message.
    I don't know how to make it shut down.
    I'm having problems switching it on.
    This ... seem to be stuck.
    It won't go round.