I love the sound of a classic guitar.
I love the sound of a classical guitar.
.................................................. ...................
a classical guitar = a guitar that is used to play classical music

The local residents would like to clean the neighbourhood.
The local residents would like to clean up the
neighbourhood.
.................................................. .........
clean up = (1) clean a place, especially by taking away all the things
which make it look dirty, untidy or unattractive: 'You can play in your
bedroom as long as you promise to clean it up afterwards.' (2) make an
area or organization a better place for people to live or work in,especially by removing criminals, corrupt officials, etc: 'It's time someone'e ",
cleaned up this city; we have one of the highest crime rates in the
country.'

I bought some cheap cloth to make some curtains.
I bought some cheap material to make some curtains.
.................................................. ..............................
Cloth (uncountable) usually refers to material made of cotton, wool etc
that is used for making clothes: 'The tailor took my measurements and
then showed me several rolls of cloth.'
Material (and fabric) have a more general meaning and may be used in
connection with clothes, curtains, sheets, etc: 'The cushion covers and
the curtains were made from the same material.' 'They specialize in the
manufacture of elasticated fabric.'

The dancers were dressed in their national clothes. ,.,f
The dancers were dressed in their national costume.
.................................................. ....................
costume = (1) (countable) a set of clothes worn during a performance
by an actor, clown, etc: 'She used to work for a theatre company,
designing and making costumes.' (2) (uncountable) a set of clothes that
are typical of a particular country or historical period: 'The castle guides
were dressed up in Elizabethan costume.' 'A group of Hungarian folk
dancers came on stage, all wearing national costume

For those who live by themselves, television provides a good
company.
For those who live by themselves, television provides good
company.
.........................................
When company means 'someone or something that stops you from
feeling lonely or bored; companionship', it is uncountable: 'Whenever he
goes off on a long trip, he takes his radio with him for company.'

It is childish to complain against rules.
It is childish to complain about rules.
.................................................. ................
They are always complaining for something.
They are always complaining about something.
.................................................. .............
complain about sth: 'Residents living near the airport have a lot to
complain about.'

I feel quite confident with my English.
I feel quite confident about my English
.................................................. ..................
confident about sth: 'The more familiar you are with the machine, the
more confident you will be about using it.'

I began to feel more confident of myself.
l began to feel more self-confident.
.................................................. ..................
If you have confidence in your own abilities, you feel self-confident:
'Even as a child he was surprisingly self-confident and didn't mind being
left with strangers.'

First of all I'd like to congratulate you both for your wedding.
First of all I'd like to congratulate you both on your wedding.
.................................................. .................................................. .........
congratulate sb on (doing) 9th: 'The President was among the first to
congratulate the crew on the success of their mission.' 'On behalf of the
school, I'd like to congratulate the first eleven on getting through to the
final

Congratulations for your splendid examination results!
Congratulations on your splendid examination results!
.................................................. ..............
congratulations on (doing) sth (NOT for): 'Congratulations on your
promotion. You certainly deserve it.'

We're considering to visit Switzerland next year.
We're considering visiting Switzerland next year
.................................................. .................................
consider doing sth (= think about something that you might do in the
future): 'To save money, we even considered repairing the roof
ourselves

The house was consisting of three bedrooms, a kitchen, and a
bathroom.
The house consisted of three bedrooms, a kitchen, and a
bathroom.

The group was consisted of ten people.
The group consisted of ten people
.................................................. ...........
.An extended family is consisted of at least two generations\
An extended family consists of at least two generations

The school consists on four large buildings.
The school consists of four large buildings.
consist of (NOT on): 'Spain consists of 51 different provinces.'

You can contact with me any evening after six.
You can contact me any evening after six.
.................................................. .....
contact sb (WITHOUT with): 'Unless we have an address or phone
number, we can't contact them.'
Compare: 'Mrs Lewis phoned and would like you to get in touch with her.'