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单项填空题是各级各类英语考试的基本题型。它可以用来考查词法、句法、惯用法、交际用语等各项内容，是一种设题灵活、覆盖面很广的多功能题型。做单项填空题时，除了要具备扎实的基础知识，还要注意以下八个方面的问题。
一、注意“母语”的干扰
The price of meat here is_________than hefore.
A.expensive B.more expensive C.high D.higher
汉语中，物品或价格可说“昂贵”，而英语中，只能说物品价格“高低”，答案应为D。类似的干扰：repeat与again，be-cause与s0，though/although与hut不能同时连用。
二、注意“定势思维”的干扰
Mary couldn’t help__________anything for her mother becauseshe was busy writing a novel.
A.doing B.do
C.did D.to be doing
有些同学误选A，就是受can’t help doing(禁不住做某事)短语的定势影响。本题语境发生了变化，玛丽忙于写小说“不能”帮助母亲做事，而不是“禁不住做事”。又如：The day we look forward to_________.
A.coming B.came C.is coming D.have come
本句意为：我们盼望的那天就要来临了。
we look forward tn为定语从句，B时态不符，故选c．
三、注意“冗余信息”的干扰
We should do more such exercises in the future,I think.those we did yesterday.
A.like B.with C.about D.as
撇开题干中“in the future，I think”不能提供帮助的冗余信息，可以看清句中含有“such…as”这一结构，故选D。又如：
He，as well as l，_______Englsh now．
A．1ike B．1ikes C．1iking D．is liking
aswell as I为插入语，去之即得到B正确。
四、注意题干中的标点符号
_________we had to go to bed early last night.
A.We were very tired B.So we were very tired
C.Being very tired
D.Being very tiring 句中有逗号，后一分句前又没有连词。分析题意，空格处应为表示原因的分词或从句，即Being verytired或Aswewereverytired。故选C。又如：
He has many books, some of________are interesting.
A.them B.which C.those D.that
观察题干，有一逗号，some前又是一名词，这时可以判断后面是一个非限制性定语从句。故选B。
五、注意利用“一致关系”
一致关系包括主谓一致、时态一致、逻辑一致及句子结构一致等。如：
He went there,___________some books and call on an old friendof his.
A.bought B.buying C.buy D.to buy
本题中and后是动词原形call，说明它是省略了“to”的不定式，在句中作目的状语，连词and连接的结构应对等，故答案为D。若将call改为called，应选A。
六、注意“迟到信息”的影响
在选择题的题干中，空格后一些信息往往对答案起决定作用。如：
Which of the two hooks will you buy?
I will buy_________,for I’ve got some such books.
A.both B.either C.noone D.neither
本题依据空格后迟到信息：我已有这样的书，应选用否定代词，从语法上排除c，故选D。
七、注意分析句子结构
Is this the watch you wish to__________?
A.have it repaired B.repair it
C.have repaired D.have repaired it
变为陈述句后，本句结构就清晰了：This is the watch youwish t0 have repaired．watch后的关系代词因作have的宾语而省略。又如：
Was it in the room__________Lu Xun was born?
A.that B.who C.which D.where
此句可换成：It was in the room________LH Xun was born．显然是强调句，因为去掉It was…that…不影响句子结构完整，故选A。若去掉介词in，该句则是带有定语从句的一般疑问句，那时应选D。
八、注意上下文所提供的情景
在做对话题时，要注意英语对话的习惯表达。如：
We weren’t sure which way to go In the end we turned left
You______the wrong way. You_______right.
A.went,should have turned B.have gone. must turn
C.went,would have turned D.had gone. must have turned
此语境为某人在问路，而路人告知其走错了路，应朝右拐。言下之意为：他们做了不该做的事，应用句型shouldhavedone，本来应该怎样，故选A。
一、注意“母语”的干扰
The price of meat here is_________than hefore.
A.expensive B.more expensive C.high D.higher
汉语中，物品或价格可说“昂贵”，而英语中，只能说物品价格“高低”，答案应为D。类似的干扰：repeat与again，be-cause与s0，though/although与hut不能同时连用。
二、注意“定势思维”的干扰
Mary couldn’t help__________anything for her mother becauseshe was busy writing a novel.
A.doing B.do
C.did D.to be doing
有些同学误选A，就是受can’t help doing(禁不住做某事)短语的定势影响。本题语境发生了变化，玛丽忙于写小说“不能”帮助母亲做事，而不是“禁不住做事”。又如：The day we look forward to_________.
A.coming B.came C.is coming D.have come
本句意为：我们盼望的那天就要来临了。
we look forward tn为定语从句，B时态不符，故选c．
三、注意“冗余信息”的干扰
We should do more such exercises in the future,I think.those we did yesterday.
A.like B.with C.about D.as
撇开题干中“in the future，I think”不能提供帮助的冗余信息，可以看清句中含有“such…as”这一结构，故选D。又如：
He，as well as l，_______Englsh now．
A．1ike B．1ikes C．1iking D．is liking
aswell as I为插入语，去之即得到B正确。
四、注意题干中的标点符号
_________we had to go to bed early last night.
A.We were very tired B.So we were very tired
C.Being very tired
D.Being very tiring 句中有逗号，后一分句前又没有连词。分析题意，空格处应为表示原因的分词或从句，即Being verytired或Aswewereverytired。故选C。又如：
He has many books, some of________are interesting.
A.them B.which C.those D.that
观察题干，有一逗号，some前又是一名词，这时可以判断后面是一个非限制性定语从句。故选B。
五、注意利用“一致关系”
一致关系包括主谓一致、时态一致、逻辑一致及句子结构一致等。如：
He went there,___________some books and call on an old friendof his.
A.bought B.buying C.buy D.to buy
本题中and后是动词原形call，说明它是省略了“to”的不定式，在句中作目的状语，连词and连接的结构应对等，故答案为D。若将call改为called，应选A。
六、注意“迟到信息”的影响
在选择题的题干中，空格后一些信息往往对答案起决定作用。如：
Which of the two hooks will you buy?
I will buy_________,for I’ve got some such books.
A.both B.either C.noone D.neither
本题依据空格后迟到信息：我已有这样的书，应选用否定代词，从语法上排除c，故选D。
七、注意分析句子结构
Is this the watch you wish to__________?
A.have it repaired B.repair it
C.have repaired D.have repaired it
变为陈述句后，本句结构就清晰了：This is the watch youwish t0 have repaired．watch后的关系代词因作have的宾语而省略。又如：
Was it in the room__________Lu Xun was born?
A.that B.who C.which D.where
此句可换成：It was in the room________LH Xun was born．显然是强调句，因为去掉It was…that…不影响句子结构完整，故选A。若去掉介词in，该句则是带有定语从句的一般疑问句，那时应选D。
八、注意上下文所提供的情景
在做对话题时，要注意英语对话的习惯表达。如：
We weren’t sure which way to go In the end we turned left
You______the wrong way. You_______right.
A.went,should have turned B.have gone. must turn
C.went,would have turned D.had gone. must have turned
此语境为某人在问路，而路人告知其走错了路，应朝右拐。言下之意为：他们做了不该做的事，应用句型shouldhavedone，本来应该怎样，故选A。