my sister和my sisters有什么区别
前者是单数，表示一个。后者加了s，表复数，意为“我的姐妹们”
my sister是我姐或者妹的意思，而my sisters则是我的姐妹们的意思，区别可以从以下例子看出：
This is my sister Amy, there are 3 sisters and 3 brothers in our family, my sisters live in Guangzhou. 这是我姐姐艾米，我们家有3个姐姐和3个兄弟，我姐姐们都住在广州。
the only one of 后面用单数还是复数
the only one of sth后面的动词用单数，尽管of 后接名词复数。中文意思是“……中唯一的”。
例如，我爷爷当兵时仅存的一张照片昨天晚上在一场大火中化为灰烬，这令我懊悔不已。
The only one of the pictures of my grandfather in the army was turned to ashes in a fire last night, which made me regret it
the only one of 后面使用单数。
因为“one”是单数形式，所以在英语中，如果“the only one”指代的是一个人或一个物品，后面的动词和名词都需要使用单数形式。
例如，“She is the only one of her sisters who likes to play basketball”中的动词“likes”和名词“sisters”都使用了单数形式。
my sister是三单吗
My sister是单数第三人称，凡是能用he，she, it代替的名词或短语都是单数第三人称。例如My sister is a clever girl，She is good at math.当单数第三人称做句子的主语时，句子用一般现在时的话，谓语动词也要用单三的形式。很多人容易把my sister当成第一人称，因为他觉得my是第一人称, 这是错误的想法。
my sister是三单。
She said it was a favor to my sister and brother.
Finally, he got married and raised my sister and me.
At the time my sisters felt more anger than I did.
I gave my mother $ 300, my sister $ 200.
The nuns at Holy Cross Academy told my sister this one:
How would I know my sister had more boxes than me?
she has two sisters改为一般疑问句并肯定回答
She has two sisters.意思是:她有两个姐姐。是一般现在时，主语是第三人称单数，谓语动词是单三形式has,变一般疑问句，在开头加助动词does,再把动词has变成原形have.即 Does she have two sisters？
她有两个姐姐吗？它的肯定回答是Yes, she does.
到此，以上就是小编对于sisters为什么加s的问题就介绍到这了，希望介绍的4点解答对大家有用，有任何问题和不懂的，欢迎各位老师在评论区讨论，给我留言。
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