Page 126 - Basic English Usage

171-172 126

We can make an emphatic imperative with do. This is common in polite
requests, complaints and apologies.
Do sitdown. Dotry to make less noise.
Do forgive me — | didn’t mean to interrupt.

The imperative does not usually have a subject, but we can use a noun
or pronoun to make it clear who we are speaking to.
Mary come here — everybody else stay where you are.
Somebody answer the phone!
After imperatives, we can use the question tags (see 273) will you? won't
you? would you? can you? can’t you? and could you?
Come and help me, will you?
Give me a cigarette, could you?
Be quiet, can’t you?

For the ‘first-person plural! imperative’ /et’s, see 191.

171 in and into (prepositions)
To talk about the position of something (with no movement), we use in.
‘Where's Susie?’ ‘In the bedroom.’
My mother's the woman in the chair by the window.
When we talk about a movement, we usually use into.
She came into my room holding a paper.
! walked out into the garden to think.
After some words, both are possible. (For example throw, jump, cut,
push.) We prefer into when we think of the movement, and in when we
think of the end of the movement — the place where something will be.
Compare:
She threw her ring into the air.
She threw her ring in(to) the river.
We use in after sit down, and very often after put.
He sat down in his favourite armchair. (NOT Hesatdewninte ...)
| put my hand in my pocket.

172 in case

We use in case to talk about things we do because something else
might happen.
Take an umbrella in case it rains. (= ... because it might rain.)
lve bought a chicken in case your mother stays to lunch.
| wrote down her adaress in case | forgot it.