សព្វថ្ងៃនេះគ្រប់បណ្តាប្រទេសលើសកលលោក
កំពុងយកចិត្តទុកដាក់យ៉ាងខ្លាំងក្លាទៅលើ បញ្ហាផ្សែងពុលដែលបណ្តាលមកពី
សកម្មភាពផ្សេងៗរបស់មនុស្ស ជាពិសេសផ្សែងពុលដែលចេញពីយានយន្ត។ បញ្ហាផ្សែងពុលដែលចេញពីយានយន្តនេះ
ត្រូវបានក្រុមហ៊ុនផ្សេងៗ លើពិភពលោកខិតខំស្រាវជ្រាវ និង ផលិតឧបករណ៍ដើម្បីយកមកបំពាក់លើយានយន្ត
និងម៉ាស៊ីនផ្សេងៗ...
Sunday, March 11, 2018
Thursday, March 8, 2018
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201
1. Structures
(singular)
(plural)
1.1. Positive
There
is
a table.
are
two books.
There is + singular nouns
/uncountable nouns
There are + plural nouns
/countable nouns
...
undefined
201
1.
Definition
Prepositions
are words normally placed before nouns or pronouns. Prepositions are used to
show the relationship between its object and other words in the sentence.
2.
Condition of using
2.1.
On is
used for things on the surface or side of something and with islands.
1.
The cat is on the table.
2....
undefined
201
A pronoun is a word used instead of a noun to indicate someone or something already mentioned or known. There are five forms of pronouns in English; subject pronouns, complement pronouns (object pronouns), possessive pronouns, possessive adjectives, and reflexive pronouns.
1. Subject pronouns
...
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