先找主干：主谓宾怎么断

Even though there is plenty of evidence that the quality of the teachers is the most important variable, teachers' unions have fought against getting rid of bad ones and promoting good ones.

主干teachers' unions have fought against getting rid of bad ones and promoting good ones

尽管有大量证据表明教师质量是最重要的变量，但教师工会一直反对辞退差老师以及提拔好老师。

看点Even though打头的状语从句直接剥离，主句主干是主谓宾结构，have fought against是谓语，后跟两个动名词短语作宾语。

In the past couple of weeks a quarrel has illustrated the value to advertisers of such fine-grained information: Should advertisers assume that people are happy to be tracked and sent behavioural ads?

主干a quarrel has illustrated the value

在过去几周里，一场争吵向广告商说明了这种精细信息的价值：广告商是否应该假设人们乐于被追踪并被发送行为广告？

看点主谓宾极短，宾语value后挂了两个介词短语to...和of...作修饰，冒号后是具体解释，找主干时介词修饰和冒号内容全剥离。

Even the very phrase “jobseeker’s allowance” is about redefining the unemployed as a “jobseeker” who had no fundamental right to a benefit he or she has earned through making national insurance contributions.

主干the phrase is about redefining the unemployed as a "jobseeker"

甚至“求职者津贴”这个短语，就是要把失业者重新定义为没有基本权利去领取其通过缴纳国民保险费而挣来的救济金的“求职者”。

看点主干是主系表结构，is about是系动词+介词作谓语，redefining是动名词作宾语。who和he or she引导的定语从句全挂在一个名词后，剥离后主干极简。

Try to keep in mind that almost everyone respects and wants to help you if you are trying to make a good change in your life, especially your dearest and nearest people.

主干Try to keep in mind that almost everyone respects and wants to help you

请记住，如果你正试图在生活中做出好的改变，几乎每个人都会尊重并想要帮助你，尤其是你最亲近的人。

看点祈使句主干是Try，后接不定式和that宾语从句。if条件状语从句插在从句的谓语help和宾语you之后，剥离if部分，that从句的主干就是everyone respects and wants to help you。

When younger kids learn computer science, they learn that it’s not just a confusing, endless string of letters and numbers – but a tool to build apps, or create artwork, or test hypotheses.

主干they learn that it's not just a string but a tool

当更小的孩子学习计算机科学时，他们了解到它不仅仅是一串令人困惑的、无尽的字母和数字——而是一个用来构建应用程序、创作艺术品或检验假设的工具。

看点When打头的时间状语从句剥离，主句主干是they learn that...。that宾语从句内部是not...but...并列结构，破折号后是并列项，主干核心是it's not a string but a tool。

Last year, the Transportation Security Administration (TSA) found in a secret check that undercover investigators were able to sneak weapons – both fake and real – past airport security nearly every time they tried.

主干the TSA found that investigators were able to sneak weapons

去年，运输安全管理局（TSA）在一次秘密检查中发现，卧底调查员几乎每次尝试都能将武器（无论真假）偷偷带过机场安检。

看点found和that宾语从句之间被in a secret check隔开，找主干时把介词短语剥离。破折号中间是插入语，every time是时间状语从句，剥离后主干就是TSA found that...。