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This is my father/Dad/Daddy.
father/Dad/Daddy
2.Presentation
This is my mother/ Mum/Mummy.
Mother/Mum/Mummy
Explanation
David, this is my mother.
大卫, 这是我妈妈。
1. mother, father 用于比较正式的场合, 或象别人介绍自己的父母时使用。如:
These are my parents.
parents
2. parents 指双亲, 指父亲或母亲一个人时, 要用parent 形式。
在英语中表示两个或两个以上的人或物时, 名词要用复数形式。如：
one apple 一个苹果
two apples 两个苹果
3. These are my parents.
These are 是用来介绍两个或两个以上的人或物。
注意：these是this的复数， 指“这些”， those是that的复数， 指“那些”。 These、those作主语时， 后面的谓语动词用复数形式are。
These are my parents.
This is
my father.
This is
my mother.
friends
These are my friends.
This is his pen.
These are his pens.
This is her book.
These are her books.
Those are my