Collins Cobuild

Unit 4
The imperative and ‘let’
Main points
The imperative is the same as the base form of a verb.
You form a negative imperative with ‘do not’, ‘don’t’, or ‘never’.
You use the imperative to ask or tell someone to do something, or
to give advice, warnings, or instructions on how to do something.
You  use  ‘let’  when  you  are  offering  to  do  something,  making
suggestions, or telling someone to do something.
1
The imperative is the same as the base form of a verb. You do not use
a pronoun in front of it.
Come to my place.
Start when you hear the bell.
2
You form a negative imperative by putting ‘do not’, ‘don’t’, or ‘never’
in front of the verb.
Do not write in this book.
Don’t go so fast.
Never open the front door to strangers.
3
You use the imperative when you are:
• asking or telling someone to do something

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Pass the salt.
Hurry up!
• giving someone advice or a warning
Mind your head.
Take care!
• giving someone instructions on how to do something
Put this bit over here, so it fits into that hole.
Turn right off Broadway into Caxton Street.
4
When you want to make an imperative more polite or more emphatic,
you can put ‘do’ in front of it.
Do have a chocolate biscuit.
Do stop crying.
Do be careful.
5
 The  imperative  is  also  used  in  written  instructions  on  how  to  do
something, for example on notices and packets of food, and in books.
To report faults, dial 6666.
Store in a dry place.
Fry the chopped onion and pepper in the oil.
Note  that  written  instructions  usually  have  to  be  short.  This  means
that words such as ‘the’ are often omitted.
Wear rubber gloves.
Turn off switch.
Wipe bulb.
Written imperatives are also used to give warnings.
Reduce speed now.

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6
You use ‘let me’ followed by the base form of a verb when you are
offering to do something for someone.
Let me take your coat.
Let me give you a few details.
7
 You  use  ‘let’s’  followed  by  the  base  form  of  a  verb  when  you  are
suggesting what you and someone else should do.
Let’s go outside.
Let’s look at our map.
Note that the form ‘let us’ is only used in formal or written English.
Let us consider a very simple example.
You put ‘do’ before ‘let’s’ when you are very keen to do something.
Do let’s get a taxi.
The negative of ‘let’s’ is ‘let’s not’ or ‘don’t let’s’.
Let’s not talk about that.
Don’t let’s actually write it in the book.
8
You use ‘let’ followed by a noun group and the base form of a verb
when you are telling someone to do something or to allow someone
else to do it.
Let me see it.
Let Philip have a look at it.

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