【命題依據】高考試題每年都要涉及句法知識，這些特殊的句型結構，每年單項填空題都會出現1-2道。高考試題對這些句型結構的考查往往是以測試它們中的特殊結構為主，例如倒裝句中否定副詞位于句首；as引導讓步狀語從句的倒裝；省略if的虛擬條件句等。又如強調句中的強調特殊疑問句以及強調句與其它相似句式的混合使用等。估計今后高考試題不會降低對這些特殊句型結構的考查力度。
[例題1] -Why can’t I smoke here?
-At no time ____ in the meeting room.
A. is smoking permitted B. smoking is permitted
C. does smoking permit D. smoking does permit
【解題關鍵】 解答該題的關鍵是準確把握答句中位于句首的表示否定意義的介詞短語at no time所暗示的選擇條件。
【答案解析】答句中否定介詞短語at no time位于句首，表明了句子的主謂結構應采用部分倒裝的形式，即將句中的助動詞調至主語之前。根據句子意思該句為被動語態，排除選項B、C、D。答案為A。
[例題2] Only ____ as an interpreter ____ how important it is to grasp English.
A. when did I work; I realized B. when I worked; I realized
C. when did I work; did I realize D. when I worked; did I realize
【解題關鍵】 解答該題的關鍵是要理解only引導的時間狀語從句與主句的句子結構，準確辨別主從句的倒裝關系。
【答案解析】only引導狀語從句位于句首，從句不可采用倒裝形式，主句必須部分倒裝。答案為D。
[例題3] Zhang Hua is clever and works hard at his lessons. _________.
A. So is Li Ming B. So does Li Ming
C. It was the same with Li Ming D. So it is with Li Ming
【解題關鍵】 解答該題的關鍵是要注意一個分句中含有兩個不同的謂語部分時，另一個分句倒裝結構的選用。
【答案解析】根據題干及句子結構可知，它含有兩個不同的謂語動詞，當它的內容也適合另一個主語時，這個句子需用So it is/ was with sb/sth. 或It is/was the same with sb/sth. 來表示。選項C時態錯誤。答案為D。
[例題4] that they may eventually reduce the amount of labor needed on construction sites by 90 percent.
A. Such construction robots are clever B. So clever the construction robots are
C. Such clever construction robots are D. So clever are the construction robots
【解題關鍵】 解答該題的關鍵是弄清在so ...that 或such...that 引導的結果狀語從句中倒裝句的運用。
【答案解析】在so...that 或such...that 引導的結果狀語從句中，當so或 such 位于句首時，主句要采用部分倒裝形式。答案為 D。
[例題5] Important ___ his discovery was, it was regarded as a matter of no account in his time.
A. when B. until C. as D. although
【解題關鍵】 解答該題的關鍵是要準確理解句子意思，并根據句子結構的需要，作出選擇。
【答案解析】分析句子意思可知，選項部分為讓步狀語從句，當從句中用作狀語的形容詞或名詞位于句首時，要用as 或though，但助動詞不前置。答案為C。
[例題6] ____ in 1812, the New Orleans Battle could have been avoided.
A. If the peace agreement was signed in America
B. If the peace agreement had signed in America
C. Was the peace agreement signed in America
D. Had the peace agreement been signed in America
【解題關鍵】 解答該題的關鍵是要根據句子意思以及句子謂語部分的結構，正確判斷選項部分動詞時態，語態以及語氣的使用。
【答案解析】根據題干中主句謂語動詞的結構可知，該句是表示與過去事實相反的虛擬結構，從句中謂語部分應使用過去完成時，如果省略連詞if，句子應采用部分倒裝形式，即將助動詞had調至主語之前，選項A、C為陳述語序，選項B為主動語態，均不符合句子結構。答案D。
[例題7] It was too noisy outside. Not until I shouted at the top of my voice ____ his head.
A. did he turn B. had he turned
C. he hadn’t turned D. he didn’t turn
【解題關鍵】解答該題的關鍵是要根據句子結構，準確判斷選項部分倒裝結構動詞時態的選用。
【答案解析】根據題干及句子結構可知，not until引導的時間狀語從句位于句首，且表示過去某一點時刻所發生的動作，主句應采用一般過去時的部分倒裝形式。答案為A。
[例題8] It was ____ she was injured in the accident ___ she didn’t come to the party yesterday.
A. as; which B. because; that
C. since; why D. for; how
【解題關鍵】 解答該題的關鍵是要注意辨別強調原因狀語從句中，連接詞的選用。
【答案解析】根據句子結構可以看出該句是一強調句型，被強調部分是原因狀語從句。此句的陳述語序為She didn’t come to the party yesterday because she was injured in the accident.由It is/was+被強調部分+that連接句子的其它部分。答案為B。
[例題9] It was on the farm ____ he spent his childhood____ he learned how to grow vegetables.
A. where; that B. which; when
C. that; that D. which; which
【解題關鍵】 解答該題的關鍵是要注意辨別句中強調句與定語從句的連接詞的選用。
【答案解析】根據句子意思可知，第一空為定語從句，先行詞the farm 在從句he spent his childhood 中作地點狀語，故選where；第二空為強調的陳述部分，應由連詞that連接。答案為A。
[例題10] -What did she want to know, Tom?
-She wondered ____ we could complete the experiment
A. when was it B. it was when that
C. it was when D. when it was that
【解題關鍵】解答該題的關鍵是要注意強調句中強調特殊疑問詞用作賓語從句部分時的語序。
【答案解析】分析句子意思以及句子結構可知，空格部分為強調特殊疑問詞when，且為賓語從句結構，故特殊疑問句必須置于主從句之間，并且要使用陳述語序，故應選when it was that。答案為D。
[例題11] Was it not until you began to work ___ how much time you had wasted?
A. did you realize B. that you realized
C. did you not realize D. that you didn’t realize
【解題關鍵】 解答該題的關鍵是要注意區別not until所引導的強調句子倒裝句的用法區別。
【答案解析】分析句子結構可知，該題為It was not until的強調句型結構，故應選由that連接的陳述結構，由于 not前置，故陳述結構中必須使用肯定結構形式。 如果 not until引導的時間狀語位于句首，則句子必須采用部分倒裝形式，且用肯定結構。答案為B。
[例題12] -Li Ping told me that he overslept this morning.
-Oh, he rarely used to oversleep, _____?
A. usedn’t he B. was he C. didn’t he D. did he
【解題關鍵】 解答該題的關鍵是要注意否定副詞rarely與used to連用時，反意疑問句部分的結構。
【答案解析】由于答句中used to 前否定副詞的使用，說明該句陳述部分為否定結構，后面反意疑問部分要用肯定結構形式，故首先排除選項A、C。選項B的助動詞不一致，應選用did或 used 來構成反意疑問句。答案為D。
[例題13] Mike isn’t a hard瞱orking student, for this is the third time that he has been late, ____?
A. is he B. isn’t it C. hasn’t he D. isn’t this
【解題關鍵】 解答該題的關鍵是要準確把握并列句結構中反意疑問句的構成。
【答案解析】該題為并列句結構，反意疑問句應由后一分句決定。后一分句是一個復合句結構，反意疑問句應由主句this is決定，指示代詞 this構成反意疑問句時，必須用it代替。答案為B。
[例題14]There aren’t many cafes, and let’s stop at the next place we see, ____?
A. are there B. will you C. shall we D. don’t you
【解題關鍵】 解答該題的關鍵是要準確判斷反意疑問句在并列分句結構中的使用
【答案解析】該題干為兩個并列分句，反意疑問句必須由后一分句決定，let’s開頭的祈使句，構成反意疑問句時，要用 shall we開頭。答案為C。
[例題15] The news that more middle school graduates will be admitted into universities encourages us greatly, ____?
A. doesn’t it B. does it C. do they D. don’t they
【解題關鍵】 解答該題的關鍵是要準確把握復合句型結構中反意疑問句的構成。
【答案解析】分析句子結構可知，該句為同位語從句，反意疑問句應根據主句進行變化，該句主語為The news ，謂語部分為encourages us greatly為肯定結構，故反意疑問句應用否定形式。答案為A。