相互代詞：表示相互關係的詞叫相互代詞。
each other ,one another是相互代詞,譯成互相,可以通用。each other表示兩者之間,而one anther表示許多人之間。它們有所有格形式each others ,one anothers。如： We must help each other when we are in trouble. / They sat there without talking to one another / each other.
疑問代詞：用來提出問題的代詞稱為疑問代詞。
1.who、whom、whose、what、which、whoever、whatever、whichever主要用於特殊疑問句中,一般放在句首。口語中也常用who代替whom作賓語,但在介詞後則只能用whom。如：
Who did you invite to your birthday party? / What does she want to be when she grows up?
2.who 和whom只能獨立使用,其中who可以作句子的主語、表語或動詞的賓語,whom只能作謂語動詞的賓語;而what、which、whose等既可以獨立使用作主語、表語和賓語,也可以與名詞構成疑問短語。如： Who is that man? / What colour are their hats? / Which car was made in Germany?
注意這個提問：The man in the car is my father.
Which man is your father?
3.which除了可以詢問指代的情況之外,還可以針對說明人物的時間、地點、歲數、顏色、大小、狀況等進行提問。如：People there live a very sad life. Which people live a sad life? / --Which hotel have you booked for your holiday?The biggest one in Haikou.
4.疑問代詞不分單複數,視它所替代的人或事物決定單複數,但是通常用單數;如果修飾名詞,則以名詞的單複數為準。如：Who is in that playhouse? / What is that? / What are those? / What colours do they have?
each other ,one another是相互代詞,譯成互相,可以通用。each other表示兩者之間,而one anther表示許多人之間。它們有所有格形式each others ,one anothers。如： We must help each other when we are in trouble. / They sat there without talking to one another / each other.
疑問代詞：用來提出問題的代詞稱為疑問代詞。
1.who、whom、whose、what、which、whoever、whatever、whichever主要用於特殊疑問句中,一般放在句首。口語中也常用who代替whom作賓語,但在介詞後則只能用whom。如：
Who did you invite to your birthday party? / What does she want to be when she grows up?
2.who 和whom只能獨立使用,其中who可以作句子的主語、表語或動詞的賓語,whom只能作謂語動詞的賓語;而what、which、whose等既可以獨立使用作主語、表語和賓語,也可以與名詞構成疑問短語。如： Who is that man? / What colour are their hats? / Which car was made in Germany?
注意這個提問：The man in the car is my father.
Which man is your father?
3.which除了可以詢問指代的情況之外,還可以針對說明人物的時間、地點、歲數、顏色、大小、狀況等進行提問。如：People there live a very sad life. Which people live a sad life? / --Which hotel have you booked for your holiday?The biggest one in Haikou.
4.疑問代詞不分單複數,視它所替代的人或事物決定單複數,但是通常用單數;如果修飾名詞,則以名詞的單複數為準。如：Who is in that playhouse? / What is that? / What are those? / What colours do they have?
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