either of (兩者其一)
neither of(兩者都不)
這兩個(gè)后＋單數(shù)

both of (兩者都)，后＋復(fù)數(shù)

all of (三者或三者以上都是)
none of (三者或三者以上都不是)

例子
either of 是指“兩者有其一......”
Either of us speaks English. （注意“speaks“）
neither of是指“兩者都不...” 用于否定句
Neither of us English. (注意“speaks“）
both of是指兩者都...... 用于肯定句
Both the boys are clever. 兩個(gè)男孩都很聰明。

Either of與both of 注意區(qū)別兩者的意思,不同的意思,單復(fù)數(shù)不一樣.
① There are two apples on the table; you can take either of them. 桌上有兩只蘋果，隨你拿哪一只。
② There are two apples on the table; you can take both of them. 桌上有兩只蘋果，你可以把兩只都拿去。 ③ There are trees on either side of the street. 街的兩邊（每一邊）綠樹成蔭。
④ There are trees on both sides of the street. 街的兩邊綠樹成蔭。

all of是指所有人（或物）都...（超過兩個(gè)）
All of the Chinese students are Young Pioneers.所有中國學(xué)生都是少先隊(duì)員。
否定式:Not all of，意思是“不全是” (千萬不要誤認(rèn)為是“全部都不是”。)
Not all of us went to school yesterday.昨天我們不全都來上學(xué)。
對(duì)比:All of us went to school yesterday.昨天我們?nèi)紒砩蠈W(xué).

none of 是指“所有人（或物）都不...”全部否定（超過三個(gè)）
以None of 開頭的句子，謂語動(dòng)詞用單數(shù)或復(fù)數(shù)均可。
None of。。。作主語，強(qiáng)調(diào)個(gè)體時(shí)，謂語動(dòng)詞用單數(shù)；若強(qiáng)調(diào)整體時(shí)，謂語動(dòng)詞則用復(fù)數(shù)。
None of us speaks English. （注意“speaks“）
He likes none of these books.這些書他一本也不喜歡
None of the food was left.沒剩一點(diǎn)食物
None of the money is mine. 這筆錢沒有一點(diǎn)是我的.
None of these cars is [are] new.這些汽車沒有一輛是新的.
None of us has got a camera.我們中間沒有一個(gè)人有照相機(jī).
None of 后接限定詞,如the, my, these