1.If not more so
If not more so是地道英文中很常见的一个表达，但很少在中国学生的习作中看到。或许的一个原因是if not more so在中文里边很难找到一个对等的概念，而关于母语中没有的概念，咱们会倾向于不去运用它。if在这儿一般用来指与语句首要部分的陈说略微不同（used when you are adding that something may be even more, less, better, worse etc than you have just said）。if not more so意思很奇妙，它的大约意义是“即便不是更……”。例如The Economist文章里边有这样的语句：
The next phase of the computing revolution is the “internet of things” (IoT), in which all manner of everyday objects, from light bulbs to cars, incorporate computers connected permanently to the internet. Most of these gizmos are as insecure as any other computer, if not more so.
上面这段话的意思是：现在许多日常设备都开端接入互联网（即所谓的“物联网”），但这些设备像一般的电脑相同不行安全，很简单遭到进犯。Most of these gizmos are as insecure as any other computer, if not more so. 能够理解为“这些设备中的大部分即便没有更易遭受进犯，也和其他电脑相同不行安全”。
Her needs are just as important as yours, if not more so.
除了if not more so这个句型之外，if not…还能够接形容词构成其他调配，例如if not impossible/great/forgivable，举个比方：
The snow was now two feet deep, making it difficult, if not impossible, to get the car out.
这儿if not impossible相当于although it was not impossible，语句能够理解为“雪有两英尺厚，要把轿车拉出来很困难，虽然不是不或许。”
Individuals can do nothing to protect the environment; only governments and large companies can make a difference. To what extent do you agree or disagree?
People have different views about whether individuals can contribute significantly to environmental protection. Although governments and large companies are crucial in addressing conservation issues, the role played by individuals is just as important, if not more so.
2.The argument that…rests chiefly on the fact that…
在解说一个观点时咱们一般会用到这样的句型：the reason why…is…，除此之外还能够有下面的写法：
Mr Ritter’s argument that Amazon and Zalando can comfortably co-exist rests chiefly on the fact that Amazon is pursuing the more price-conscious shopper, whereas Zalando is after a higher-value, more brand-conscious segment.
从这儿能够提取出一个句型：the argument that…rests chiefly on the fact that…，该句型能够用在议论文的阶段最初，用来对分观点进行解说。举个比方，有这样的作文题目：
Some people believe that all high school graduates should be given the opportunity to go to college or university. To what extent do you agree or disagree?
The argument that higher education should be made universally availablerests chiefly on the fact that doing so is in society’s best economic interests. Research shows that increased investment in tertiary education has a positive effect on a country’s gross domestic product. In the long term, a society with a greater number of highly-educated citizens is more likely to develop the creative technologies and business solutions needed to stimulate economic growth.
在举例证明时最常见的一个说法是for example/for instance，但咱们也能够换一种表达方式，比方：
Mr Yameen has weathered plenty of adversity, as the long list of his opponents attests. Media reports in August about moves to oust him came to nothing.
在上面的语句中as引导的是一个非限制性定语从句，它所指代的先行词是前面整个主句Mr Yameen has weathered plenty of adversity，此刻as在从句中充任的是attest的宾语。Attest的意义是“证明，作为……的依据”。
a) As the long list of his opponents attests, Mr Yameen has weathered plenty of adversity.
b) The long list of his opponents attests that Mr Yameen has weathered plenty of adversity.
…as…attest…这一句型有时分可拿来替换for example/for instance，例如：
Air pollution can have a negative impact on people’s health. For example, people living in areas with poor air quality are prone to respiratory disease.
a) Air pollution can have a negative impact on people’s health, as the rise in respiratory disease in areas with poor air quality attests.
b) Air pollution can have a negative impact on people’s health, as is attested by the rise in respiratory disease in areas with poor air quality.
4.easier said than done
Instilling these techniques is easier said than done. With teaching as with other complex skills, the route to mastery is not abstruse theory but intense, guided practice grounded in subject-matter knowledge and pedagogical methods.
Being fluent in English / a good programmer is easier said than done. With learning/coding as with other complex skills, the route to mastery is not abstruse theory but intense, guided practice grounded in subject-matter knowledge and pedagogical methods.