my mother是單數還是複數

my mother是單數還是複數

單數

是a friend of my mother對，還是a friend of my mother's對？

都對.
a friend of my mother對，母親的朋友.（母親只有一個朋友）
a friend of my mother's對，母親的朋友中的一個（母親有很多朋友）

He is a friend of my mother
要不要加's？

要的
He is a friend of my mother 's .

along with作主語時謂語的單複數形式，用法同as well as一樣嗎

along with跟as well as用法一樣，他們一出現，真正主語在他們前面

A with B後面的動詞用單數還是複數？

整個短語的單複數由A决定.比如An apple with two oranges is in the basket

為什麼Tom with his classmates是複數後面還是要用第三人稱單數

因為主語是Tom，with his classmates是介詞短語做補語補充說明Tom，不充當主語成分.所以用第三人稱單數
如果是Tom and his classmates，這裡主語就是這一群了，後面就不是第三人稱單數了
希望對您有所幫助~

No one in our class but Tom and I（agree）with him.這句話中的（agree）使用單數還是複數？
說說這麼寫的理由

agrees主語是No one，所以用單數第三人稱.

nobody but Tom and JIm後+謂語複數還是單數

單數主語是nobody

單數名詞做主語後面有with，as well as，like，together with等詞語時，謂語後面用單數形式.
例：1.The teacher with his studentshs gone to the library.
請都舉一個例子.

Action as well as thought is necessary.
She like you likes watching TV .
Tom together with me goes out to play sometimes.

half of population是單數還是複數

population是整體所以
half of ~
整體的一半也是整體
看作`是單數.