主语从句：What / Whether / It is … that

That means more battles like the one now going on between the Justice Department and California, which enacted a tough net neutrality law in the wake of the FCC's abdication.

主干That means more battles

那意味着更多的类似司法部和加州之间正在进行的战斗，加州在FCC放弃监管后制定了一项严格的网络中立法律。

看点句首That是指示代词作主语，means是谓语，which引导非限制定语从句，无主语从句。

That is before we look for the space to grow the grains, sugars, seeds and oils that provide us with the vast bulk of our current calorie intake.“ie intake.

主干That is before we look for the space

那是在我们寻找种植谷物、糖、种子和油的空间之前，这些为我们提供了目前卡路里摄入的绝大部分。

看点句首That是指示代词作主语，is是系动词，before引导时间状语从句，that引导定语从句，无主语从句。

What motivated him, we were to understand, was his zeal for “fundamental fairness” – protecting the taxpayer, controlling spending and ensuring that only the most deserving claimants received their benefits.

主干What motivated him was his zeal

我们要明白，激励他的是他对“根本公平”的热情——保护纳税人、控制支出并确保只有最应得的申请人才能获得福利。

看点What motivated him是主语从句作主语，was是主句系动词，his zeal是表语。插入语we were to understand隔开了从句和谓语。

That would be the people who buy advertising from them – and Facebook and Google, the two virtual giants, dominate digital advertising to the disadvantage of all other media and entertainment companies.

主干That would be the people

那将是向他们购买广告的人——而Facebook和谷歌这两大虚拟巨头主导着数字广告，使所有其他媒体和娱乐公司处于劣势。

看点句首That是指示代词作主语，would be是系动词，who引导定语从句修饰people，无主语从句。

What began as a small neighborhood gathering blossomed into a massive cultural event, welcoming tens of thousands of people each year over nearly two decades before abruptly shutting down.

主干What began as a small neighborhood gathering blossomed into a massive cultural event

最初只是小型社区聚会的活动，发展成了一项大规模的文化盛事，在近二十年的时间里每年迎接数以万计的人，然后突然关闭。

看点What began as a small neighborhood gathering是主语从句，blossomed是主句谓语。

Who would have thought that, globally, the IT industry produces about the same volume of greenhouse gases as the world’s airlines do – roughly 2 percent of all CO2 emissions?

主干Who would have thought that the IT industry produces...?

谁会想到，在全球范围内，IT行业产生的温室气体量与世界航空公司产生的量大致相同——约占所有二氧化碳排放量的2%？

看点句首Who是疑问代词作主语，would have thought是谓语，that引导宾语从句，as引导比较状语从句，无主语从句。