8）语法分析：引导词

并列连词用于连接同等重要的单词、短语或句子。而常见的并列连词有：

FANBOYS ：For, And, Nor, But, Or, Yet, So
- For ：表示原因。
  - Example: I went to the store, for I needed some milk.
- And ：表示并列或添加。
  - Example: She likes apples and oranges.
- Nor ：表示否定的并列。
  - Example: He didn't go, nor did he call.
- But ：表示转折。
  - Example: She is smart but not very talkative.
- Or ：表示选择。
  - Example: You can have tea or coffee.
- Yet ：表示对比。
  - Example: The task was hard, yet she managed to complete it.
- So ：表示结果。
  - Example: It was raining, so we stayed inside.

从属连词用于连接主句和从句，通常引导一个从句。从句依赖于主句才能构成完整的句子。常见的从属连词有：

时间：When, While, As, Since, Until, Before, After
- Example: When she arrives, we will start the meeting.
原因：Because, Since, As, For
- Example: I can't come because I am sick.
条件：If, Unless, Provided that, In case
- Example: If it rains, we will stay at home.
让步：Although, Though, Even though, Despite, In spite of
- Example: Although it was cold, he went swimming.
目的：So that, In order that
- Example: I study hard so that I can pass the exam.
结果：So...that, Such...that
- Example: She was so tired that she fell asleep immediately.
方式：As if, As though
- Example: He acted as if he were a king.

关联连词将成对出现，用于连接两个相关的部分。常见的关联连词有：

Either...or ：表示选择。
- Example: Either you go, or I will.
Neither...nor ：表示双重否定。
- Example: Neither John nor Mary came to the party.
Both...and ：表示两者都。
- Example: Both Sarah and Tom are coming to the party.
Not only...but also ：表示不仅...而且。
- Example: Not only is she smart, but she is also kind.
Whether...or ：表示选择。
- Example: Whether you like it or not, you have to do it.

还有一些其他类型的引导词，如：

关系代词 （Relative Pronouns）：who, whom, whose, which, that
- Example: The man who called me is my brother.
关系副词 （Relative Adverbs）：where, when, why
- Example: This is the place where we met.

以下是一些常见的引导词及其替换用法：

Where 与 in which, on which, at which
- Where 通常用于表示地点的名词，并且在从句中充当地点状语。
- In which, on which, at which 也可以用于表示地点的名词，但具体选择取决于上下文。
例句：
- The house where we lived was very old.
  - The house in which we lived was very old.
  - The house at which we lived was very old. (较少见，但语法上正确)
- The park where we had a picnic is very large.
  - The park in which we had a picnic is very large.
  - The park at which we had a picnic is very large. (较少见，但语法上正确)
- The table on which I put the book is wobbly.
  - The table where I put the book is wobbly. (较少见，但语法上正确)
  - The table at which I put the book is wobbly. (较少见，但语法上正确)

When 与 in which, on which, at which
- When 通常用于表示时间的名词，并且在从句中充当时间状语。
- In which, on which, at which 也可以用于表示时间的名词，但具体选择取决于上下文。
例句：
- The day when we met was very special.
  - The day on which we met was very special.
  - The day at which we met was very special. (较少见，但语法上正确)
- The year when I graduated from college was 2010.
  - The year in which I graduated from college was 2010.
- The moment when he arrived, the party started.
  - The moment at which he arrived, the party started.

Why 与 for which, of which
- Why 通常用于表示原因的名词，并且在从句中充当原因状语。
- For which, of which 也可以用于表示原因的名词，但具体选择取决于上下文。
例句：
- The reason why he was late is that his car broke down.
  - The reason for which he was late is that his car broke down.
  - The reason of which he was late is that his car broke down. (较少见，但语法上正确)

How 与 in which, by which
- How 通常用于表示方式的名词，并且在从句中充当方式状语。
- In which, by which 也可以用于表示方式的名词，但具体选择取决于上下文。
例句：
- The way how he solved the problem was impressive.
  - The way in which he solved the problem was impressive.
  - The way by which he solved the problem was impressive. (较少见，但语法上正确)