Money is any object or record that is generally accepted as payment for goods and services and repayment of debts in a given country or socio-economic context. is accepted as payment - present simple, passive voice
However, this has not always been true. has not been true - present perfect, passive voice
In primitive societies a system of barter was used. was used - past simple, passive voice
Cattle, grain, teeth, shells, feather, salt, tobacco have been used. have been used - present perfect, passive voice
The main functions of money are distinguished as: a medium of exchange; a unit of account; a store of value; and, occasionally in the past, a standard of deferred payment. are distinguished as - present simple, passive voice
When money is used to intermediate the exchange of goods and services, it is performing a function as a medium of exchange. is used to - present simple, passive voice
To act as a store of value, money must be able to be reliably saved, stored, and retrieved – and be predictably usable as a medium of exchange when it is retrieved. is retrieved - present simple, passive voice
Houses, office buildings, land, works of art, and many other commodities are regarded as a means of storing wealth and value. are regarded - present simple, passive voice
These payments will be made using money, because money acts as a store of value. will be made - future simple, passive voice
The scientist has already written. Andrew's hamster has just eaten. The boys found an old cage in their garden yesterday. They have not duscussed the problem yet. Charles has just finished his translation. They went to the theatre last week. My cousin has been to the theatre three times this week. His niece has just written the invitation letters. Helen came home, had a short rest, and then began to help her mother. Did your relatives take part in the demonstration yesterday? Have your parents told you about the project today? Yesterday my aunt went shopping and bought apples for a cake. Don’t buy pizza! I have already made an apple pie. Let’s have breakfast! I have just set the table. My mother is angry. My elder brother hasn’t taken out rubbish. What plants have you watered so far? Did I visit my uncle and aunt last Saturday?
is accepted as payment - present simple, passive voice
However, this has not always been true.
has not been true - present perfect, passive voice
In primitive societies a system of barter was used.
was used - past simple, passive voice
Cattle, grain, teeth, shells, feather, salt, tobacco have been used.
have been used - present perfect, passive voice
The main functions of money are distinguished as: a medium of exchange; a unit of account; a store of value; and, occasionally in the past, a standard of deferred payment.
are distinguished as - present simple, passive voice
When money is used to intermediate the exchange of goods and services, it is performing a function as a medium of exchange.
is used to - present simple, passive voice
To act as a store of value, money must be able to be reliably saved, stored, and retrieved – and be predictably usable as a medium of exchange when it is retrieved.
is retrieved - present simple, passive voice
Houses, office buildings, land, works of art, and many other commodities are regarded as a means of storing wealth and value.
are regarded - present simple, passive voice
These payments will be made using money, because money acts as a store of value.
will be made - future simple, passive voice
Andrew's hamster has just eaten.
The boys found an old cage in their garden yesterday.
They have not duscussed the problem yet.
Charles has just finished his translation.
They went to the theatre last week.
My cousin has been to the theatre three times this week.
His niece has just written the invitation letters.
Helen came home, had a short rest, and then began to help her mother.
Did your relatives take part in the demonstration yesterday?
Have your parents told you about the project today?
Yesterday my aunt went shopping and bought apples for a cake.
Don’t buy pizza! I have already made an apple pie.
Let’s have breakfast! I have just set the table.
My mother is angry. My elder brother hasn’t taken out rubbish.
What plants have you watered so far?
Did I visit my uncle and aunt last Saturday?