Who has invented paper ошибка

A

Study
this example situation:

·        
Tom is looking for his key. He can’t find it.

·        
He has lost
his key. (present perfect)(This
means that he doesn’t have his key now.)

·        
Now Tom has
found his key. He has it now.

·        
Has he lost his key? No, he has found it.

·        
Did he lose his key? Yes, he did.

·        
He lost
his key (past simple)but now he has found it. (present perfect)

The present perfect (something has happened) is a present tense. It always tells us
about the situation now. ‘Tom has
lost his key’= he doesn’t have his key now (see Unit 7).

The past simple (something happened) tells us only about
the past. If somebody says ‘Tom lost
his key’, this doesn’t tell us whether he has the key now or not. It tells us
only that he lost his key at some time in the past.

Do not use the present perfect if the
situation now is different. Compare:

·        
They’ve
gone away. They’ll be back on Friday. (they are away now)

·        
They went
away, but I think they’re back at home now. (not They’ve gone)

·        
It has
stopped raining now, so we don’t need the umbrella. (it isn’t raining
now)

·        
It stopped
raining for a while, but now it’s raining again. (not lt has stopped)

B

You can use the present perfect for new
or recent happenings:

·        
‘I’ve
repaired the washing machine. It’s working OK now.’ ‘Oh, that’s
good.’

·        
‘Sally has
had a baby! It’s a boy.’ ‘That’s great news.’

Usually, you can also use the past simple:

·        
I repaired
the washing machine. It’s working OK now.

Use the past simple (not the present
perfect) for things that are not recent or new:

·        
Mozart was
a composer. He wrote more than
600 pieces of music. (not has been … has written)

·        
My mother grew
up in Italy. (not has grown)

Compare:

·        
Did you know that somebody has invented a new type of washing machine?

·        
Who invented
the telephone? (not has invented)

C

We use the present perfect to give new
information (see Unit 7). But if we continue to talk about it, we normally
use the past simple:

·        
A : Ow! I’ve
burnt myself.

·        
B: How did
you do that? (not have you done)

·        
A: I picked
up a hot dish. (not have picked)

·        
A: Look! Somebody has spilt something on the sofa.

·        
B: Well, it wasn’t
me. I didn’t do it. (not hasn’t been … haven’t done)

13.1

Complete the sentences
using the verbs in brackets. Use the present perfect where possible. Otherwise use the past simple.

13.2

Are the underlined parts
of these sentences right or wrong? Correct them where necessary.

13.3

Put the verb into the correct
form, present perfect or past simple.