完形填空是考查语言知识和语篇水平的综合测试方式。要求考生具有一定的阅读理解能力，扎实的语法知识，同时对各类词法、句法、上下文逻辑关系、语义搭配以及写作技巧等还需具有较强的运用能力。选择完形填空与单句选择填空在形式上相似，但考查的内容却包括词汇、语法、阅读和写作等各方面的应用能力。
下面育路教育网来分析一下完形填空与词汇语法、阅读以及写作之间的关系。
完形填空与词汇、语法填空 大学英语六级考试完形填空所采用的形式与词汇语法选择填空的形式是一致的。在测试要点上，完形填空与词汇语法选择填空也有很大相似之处，如单词的基本用法、同义词近义词辨别、常用句型、各种从句、谓语动词的时态、语态、语气、以及非谓语动词的用法等等。如：
1）When the new students are finally __80__，there may be one more step they have to take before registering for classes and getting to work.
80、A. adopted B. accepted C. received D. permitted 该题考查常用单词辨析。（答案：B）
2）__84__ these programs， the young people to get know the __85__ for registration and student advising， university rules， the __86___ of the library and all the other __87__ services of the college or university.
84、 A. For B. Among C. In D. On
85、 A. processes B. procedures C. projects D. provisions
86、 A. application B. usage C. use D. utility
87、 A. major B. prominent C. key D. great
84题考查的是常用介词的用法；85——87题考查的是常用单词的区别。（答案：C，B，C，A）
3） The behavior and ideals of people change according to circumstances， but they can always go back or go on to something new __79__ is better and higher than anything __80__ the past.
79、A. that B. what C. whichever D. whatever
80、A. for B. to C. within D. in
79题考查的是定语从句引导词的运用；80题考查的是常用介词短语的搭配。（答案 ：A，D）
4） Take it for granted that he likes everything and he probably __70__.
70、A. should B. may C. will D. must
70题所考查的是情态动词的用法。（答案：C）
5） If all places __87__ alike， there would be little need for geographers.
87、A. being B. are C. be D. were
87题所考查的是谓语动词虚拟语气的用法。（答案：D）
6）The secondary routes may go up steep slopes， along high cliffs， or down frightening hillside to towns __87__ in deep valley.
87、A. lying B. laying C. laid D. lied
87题所考查的既有lie与lay的区别，又有现在分词与过去分词的用法。
7）People see the sun "moving" ___80__ the sky as morning turns to night， and the earth seems stationary __81__ that is happening.
80、 A. around B. across C. on D. above
81、 A. since B. so C. while D. for
80题考查的是常用介词的搭配，81题考查的是时间状语从句。（答案：B，C） 完形填空中对词汇，语法的考查从以上各例可窥见一斑，其干扰项的设计与单项填空基本类似，但完形填空对上下文的依赖性更强。这就要求同学们不只是了解词汇和语法知识，同时还必须具备一定的阅读理解能力，对上下文的正确理解是完形填空的关键。