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英语句子成分分析例句英语长难句拆分信号：
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1、标点符号：比如，2个逗号形成插入语，破折号表示解释说明，分号相当于“and”表示并列;
2、连词：并列句的并列连词and、or、but、yet、for等，从句的从属连词which、that、when、how、if等;
3、介词：介词引导介词短语，介词短语在句子中可充当定语、状语等修饰成分;
4、不定式符号to：不定式符号to引导不定式短语，在句子中除了可以充当主语、宾语、表语、补语等主干成分外，还可做定语、状语等修饰成分;
5、分词：分词包括现在分词和过去分词，在句子中可充当定语和状语修饰成分。英语句子成分分析例句
下面我们就按照长难句拆分原则，依照这些拆分信号，结合考研英语阅读或翻译真题中的长难句进行实战演练一下吧!
This trend began during the Second World War, when several governments came to the conclusion that the specific demands that a government wants to make of its scientific establishment cannot generally be foreseen in detail.
(1)句子拆分
拆分点：从属连词、介词、标点符号
This trend began ∥during the Second World War, ∥ when several governments came to the conclusion ∥that the specific demands ∥that a government wants to make of its scientific establishment cannot generally be foreseen ∥in detail.
(2)句子结构
找谓语动词(began, came, wants, cannot be foreseen);
找连词(when, that, that)
前面没有从属连词的动词即为主句的谓语动词
确定主从句
主句：This trend began during the Second World War ;
从句：定语从句when several governments came to the conclusion修饰the Second World War，本从句嵌套着一个二级从句即同位语从句that the specific demands cannot generally be foreseen in detail修饰conclusion和一个三级从句that引导的定语从句that a government wants to make of its scientific establishment修饰demands。
(3)解析
during the Second World War介词短语做状语;when several governments came to the conclusion that the specific demands that a government wants to make of its scientific establishment cannot generally be foreseen in detail 做定语修饰the Second World War ;that the specific demands cannot generally be foreseen in detail同位语从句修饰conclusion ;that a government wants to make of its scientific establishment修饰demands。
下面就是一些很好的英语句子的结构的拆分，大家仔细看一遍，看看该怎么学习。
一、句型1： Subject (主语) + Verb (谓语) 英语句子成分分析例句
这种句型中的动词大多是不及物动词，所谓不及物动词，就是这种动词后不可以直接接宾语。常见的动词如：work, sing, swim, fish, jump, arrive, come, die, disappear, cry, happen等。如：
1) Li Ming works very hard.李明学习很努力。
2) The accident happened yesterday afternoon.事故是昨天下午发生的。
二、句型2：Subject (主语) + Link. V(系动词) + Predicate(表语)
这种句型主要用来表示主语的特点、身份等。其系动词一般可分为下列两类：
(1)表示状态。这样的词有：be, look, seem, smell, taste, sound, keep等。如：
1) This kind of food tastes delicious.这种食物吃起来很可口。
2) He looked worried just now.刚才他看上去有些焦急。
(2)表示变化。这类系动词有：become, turn, get, grow, go等。如：
1) Spring comes. It is getting warmer and warmer.春天到了，天气变得越来越暖和。