already/yet “已經(jīng)”不同
［高手出招］
1 . The train was __________moving when I got to the station.
2 . Have you started writing your composition ________？
3 . He has _______done his exercises.
4 . They've been there twice ________.
［一語擊破］
already 主要用在肯定的陳述句中，通常與動(dòng)詞的完成時(shí)連用。如：
Our visitors have come already.
already 也可用在疑問句中，常暗示說話人的“驚奇”、“意外”。如：
Have you already had breakfast？
yet 通常與一般現(xiàn)在時(shí)或現(xiàn)在完成時(shí)連用，多用于疑問句或否定句中。如：
Has she decided yet？
（ Keys： 1. already 2. yet 3. already 4. already ）
leave/forget “忘記”不同
［高手出招］
1 . I've _________his address.
2 . I_________ my umbrella at home yesterday.
［一語擊破］
leave 指將某物遺忘在某個(gè)地方，其后要接表示地點(diǎn)的詞語。如：
The little girl left her English book at home this morning.
forget 表示“忘記某物”時(shí)，不接表示地點(diǎn)的詞語。如：
He forgot his English book this morning.
（ Keys ： 1. forgotten 2. left ）
find/find out/look for “找到”不同
［高手出招］
1 . I ________ my pen everywhere， but I haven't ______it.
2 . I _________the baby crying in the next room.
3 . Will you please _______where he lives？
4 . You should _________the broom before the teacher came in.
［一語擊破］
find 意思是“找到”，“發(fā)現(xiàn)”，“發(fā)覺”，通常指找到有形的東西，也可能指偶然發(fā)現(xiàn)某物或某種情況，強(qiáng)調(diào)結(jié)果。如：
Where did you find the pen？
find out 意為“找到”、“查明”、“發(fā)現(xiàn)”，多指通過探索、觀察而發(fā)現(xiàn)，通常帶有“經(jīng)過困難曲折”的含義，后接無形或隱藏的東西。常跟賓語從句。如：
How can you find out who took the book？
look for 意思是“尋找”，強(qiáng)調(diào)動(dòng)作。
（ Keys ： 1. looked for， found 2. found 3. find out 4. find ）
every/each “每個(gè)”不同
［高手出招］
1 . _______of the boys is going to speak at the meeting this afternoon.
2 . ______child knows it.
3 . Two boys came in. ___________boy was carrying a box.
4 . ______ one of the workers is working hard.
［一語擊破］
each 著重于個(gè)別的含義。 every 著重于全體的含義。
each 可以用來指兩個(gè)以上的人或東西，但是 every 總是指三個(gè)以上的人或東西，不能指兩個(gè)。
every 只能用作定語， each 不僅可以作定語，可以作主語、賓語和同位語。如：
Each has his own name.
（ Keys ： 1. Each 2. Each/Every 3. Each 4. Every/Each ）
so / such “如此”不同
[ 高手出招 ] 1. I don't like .
2. Don't be in a hurry.
3. We had pleasant a time .
4. I don't know it was far away.
[ 一語擊破 ] so 是 副詞 ，用來修飾 形容詞 或 副詞 .如：
I am so glad to hear from my friend .
such 是 形容詞 ，用來修飾 名詞 （名詞的前面可以帶形容詞，也可以不帶）。如果修飾單數(shù)名詞，其后需加不定冠詞 a 或 an .如：
He told us such a funny story .
注意：（ 1 ）當(dāng)單數(shù)可數(shù)名詞前面有形容詞時(shí)，也可以用 so ，但要注意冠詞的位置。如：
He told us such a funny story . = He told us so funny a story .
（2） such 與 all ， any ， few ， many ， no ， one 等連用時(shí)，要置于這些詞之后，同時(shí)其后的名詞不加冠詞。如：
no such thing ， one such woman ， many such books
Keys ： 1. such 2. such 3. so 4. so
none / no one “沒有人”不同
[ 高手出招 ]1. has tried it yet .
2. of those buses go there .
3. — Are there any pictures in this book
[ 一語擊破 ]none 表示“一個(gè)也沒有”，指 全部否定 .它后面常跟 of 短語 ，指 人 、指 物 均可，用以回答 how many / how much 開頭的特殊疑問句。 謂語動(dòng)詞 用單復(fù)數(shù)均可。
no one 表示“一個(gè)也沒有”，語氣較強(qiáng)，用來指人， 不接 of 短語 .謂語動(dòng)詞用第三人稱 單數(shù) 形式，用以回答以 who 開頭的疑問句。如：
No one knows what has happened .
None of us is / are afraid of difficulties .
Keys ： 1. No one 2. None 3. None
a number of / the number of “數(shù)量”不同
[ 高手出招 ]1. A number of foreign scientists come to visit China since 1998.
A. has B. are C. have D. will
2. The number of the students in our class 45.
A. is B. are C. has D. have
[ 一語擊破 ] a number of 意思為“ 許多 ……”，后接 復(fù)數(shù)名詞 ，句中真正的主語是這個(gè)復(fù)數(shù)名詞，故 謂語動(dòng)詞 要用 復(fù)數(shù) 形式。
the number of 意思為“…… 的總數(shù) ”， number 指“數(shù)目”或“人數(shù)”，是句中真正的主語，由介詞 of 引出的短語是修飾主語的定語，故 動(dòng)詞 須用 單數(shù) 形式。
Keys ： 1. C 2.A
between / among “在……之間”不同
[ 高手出招 ]1. He is sitting Tom and John.
2. He is sitting the comrades .
3. She takes some medicine three meals every day .
[ 一語擊破 ] 這兩個(gè)都是介詞。 between 常用于 兩者 之間。 among 一般指在 三者 或 三者以上 之間。
如果指三個(gè)以上人或物中的 每?jī)蓚€(gè) 之間時(shí)，仍然要用 between .如：
Switzerland lies between France ， Italy ， Australia and Germany .
Keys ： 1. between 2. among 3. between
［高手出招］
1 . The train was __________moving when I got to the station.
2 . Have you started writing your composition ________？
3 . He has _______done his exercises.
4 . They've been there twice ________.
［一語擊破］
already 主要用在肯定的陳述句中，通常與動(dòng)詞的完成時(shí)連用。如：
Our visitors have come already.
already 也可用在疑問句中，常暗示說話人的“驚奇”、“意外”。如：
Have you already had breakfast？
yet 通常與一般現(xiàn)在時(shí)或現(xiàn)在完成時(shí)連用，多用于疑問句或否定句中。如：
Has she decided yet？
（ Keys： 1. already 2. yet 3. already 4. already ）
leave/forget “忘記”不同
［高手出招］
1 . I've _________his address.
2 . I_________ my umbrella at home yesterday.
［一語擊破］
leave 指將某物遺忘在某個(gè)地方，其后要接表示地點(diǎn)的詞語。如：
The little girl left her English book at home this morning.
forget 表示“忘記某物”時(shí)，不接表示地點(diǎn)的詞語。如：
He forgot his English book this morning.
（ Keys ： 1. forgotten 2. left ）
find/find out/look for “找到”不同
［高手出招］
1 . I ________ my pen everywhere， but I haven't ______it.
2 . I _________the baby crying in the next room.
3 . Will you please _______where he lives？
4 . You should _________the broom before the teacher came in.
［一語擊破］
find 意思是“找到”，“發(fā)現(xiàn)”，“發(fā)覺”，通常指找到有形的東西，也可能指偶然發(fā)現(xiàn)某物或某種情況，強(qiáng)調(diào)結(jié)果。如：
Where did you find the pen？
find out 意為“找到”、“查明”、“發(fā)現(xiàn)”，多指通過探索、觀察而發(fā)現(xiàn)，通常帶有“經(jīng)過困難曲折”的含義，后接無形或隱藏的東西。常跟賓語從句。如：
How can you find out who took the book？
look for 意思是“尋找”，強(qiáng)調(diào)動(dòng)作。
（ Keys ： 1. looked for， found 2. found 3. find out 4. find ）
every/each “每個(gè)”不同
［高手出招］
1 . _______of the boys is going to speak at the meeting this afternoon.
2 . ______child knows it.
3 . Two boys came in. ___________boy was carrying a box.
4 . ______ one of the workers is working hard.
［一語擊破］
each 著重于個(gè)別的含義。 every 著重于全體的含義。
each 可以用來指兩個(gè)以上的人或東西，但是 every 總是指三個(gè)以上的人或東西，不能指兩個(gè)。
every 只能用作定語， each 不僅可以作定語，可以作主語、賓語和同位語。如：
Each has his own name.
（ Keys ： 1. Each 2. Each/Every 3. Each 4. Every/Each ）
so / such “如此”不同
[ 高手出招 ] 1. I don't like .
2. Don't be in a hurry.
3. We had pleasant a time .
4. I don't know it was far away.
[ 一語擊破 ] so 是 副詞 ，用來修飾 形容詞 或 副詞 .如：
I am so glad to hear from my friend .
such 是 形容詞 ，用來修飾 名詞 （名詞的前面可以帶形容詞，也可以不帶）。如果修飾單數(shù)名詞，其后需加不定冠詞 a 或 an .如：
He told us such a funny story .
注意：（ 1 ）當(dāng)單數(shù)可數(shù)名詞前面有形容詞時(shí)，也可以用 so ，但要注意冠詞的位置。如：
He told us such a funny story . = He told us so funny a story .
（2） such 與 all ， any ， few ， many ， no ， one 等連用時(shí)，要置于這些詞之后，同時(shí)其后的名詞不加冠詞。如：
no such thing ， one such woman ， many such books
Keys ： 1. such 2. such 3. so 4. so
none / no one “沒有人”不同
[ 高手出招 ]1. has tried it yet .
2. of those buses go there .
3. — Are there any pictures in this book
[ 一語擊破 ]none 表示“一個(gè)也沒有”，指 全部否定 .它后面常跟 of 短語 ，指 人 、指 物 均可，用以回答 how many / how much 開頭的特殊疑問句。 謂語動(dòng)詞 用單復(fù)數(shù)均可。
no one 表示“一個(gè)也沒有”，語氣較強(qiáng)，用來指人， 不接 of 短語 .謂語動(dòng)詞用第三人稱 單數(shù) 形式，用以回答以 who 開頭的疑問句。如：
No one knows what has happened .
None of us is / are afraid of difficulties .
Keys ： 1. No one 2. None 3. None
a number of / the number of “數(shù)量”不同
[ 高手出招 ]1. A number of foreign scientists come to visit China since 1998.
A. has B. are C. have D. will
2. The number of the students in our class 45.
A. is B. are C. has D. have
[ 一語擊破 ] a number of 意思為“ 許多 ……”，后接 復(fù)數(shù)名詞 ，句中真正的主語是這個(gè)復(fù)數(shù)名詞，故 謂語動(dòng)詞 要用 復(fù)數(shù) 形式。
the number of 意思為“…… 的總數(shù) ”， number 指“數(shù)目”或“人數(shù)”，是句中真正的主語，由介詞 of 引出的短語是修飾主語的定語，故 動(dòng)詞 須用 單數(shù) 形式。
Keys ： 1. C 2.A
between / among “在……之間”不同
[ 高手出招 ]1. He is sitting Tom and John.
2. He is sitting the comrades .
3. She takes some medicine three meals every day .
[ 一語擊破 ] 這兩個(gè)都是介詞。 between 常用于 兩者 之間。 among 一般指在 三者 或 三者以上 之間。
如果指三個(gè)以上人或物中的 每?jī)蓚€(gè) 之間時(shí)，仍然要用 between .如：
Switzerland lies between France ， Italy ， Australia and Germany .
Keys ： 1. between 2. among 3. between