1.There is no doubt that + 句子 ~~~ It is no doubt that + 句子
例如：There is no doubt that our educational system leaves something to be desired.
毫无疑问，我们的教育制度令人不满意。
2.It is a pity that + 句子 ~~~ What a pity that + 句子
例如：It is a pity that I haven’t got the chance to travel around the world.
很遗憾我没有机会去环游世界。
3.So + 形容词 + be + 主词 + that + 句子 ~~~ Such + 名词 + be + 主词 + that + 句子
例如：So fast was the train that I couldn't catch up with it.
火车开得如此快以致于我不能赶上它。
4.The+ 比较级 + ...，the+ 比较级 + ...(越……越……)
例如：The more we get together，the happier we will be.
我们越聚在一起，就会越快乐。
5.It is the first time that + 句子
例句：It is the first time that I have eaten such delicious pizza.
这是我第一次吃到这么美味的披萨。
6.The + 最高级 + 名词 + (that) + 主词 + have ever + seen (known/heard/had/read, etc)
例句：The most beautiful flower that I have ever seen is the rose.
我曾经见过的最漂亮的花是玫瑰。
7.More and more + 名词 + (is/are) being done
例句：More and more people are being infected with the new coronavirus.
越来越多的人感染了新型冠状病毒。
8.The reason why + 句子 is that + 句子
例句：The reason why she is late for school is that she missed the bus.
她上学迟到的原因是她错过了公交车。
9.It is no wonder that + 句子
例句：It is no wonder that she is so tired after a long day at work.
难怪她在工作一整天后感到如此疲劳。
10.It is evident that + 句子
例句：It is evident that the new medicine is more effective than the old one.
很明显，新药比旧药更有效。
11.It is no longer a secret that + 句子
例句：It is no longer a secret that she has been cheating on her boyfriend.
她一直在欺骗她的男朋友，这已经不再是秘密了。
12.It is to be expected that + 句子
例句：It is to be expected that the company's profits will increase next year.
可以预料到公司的利润明年将会增加。
13.It is believed that + 句子
例句：It is believed that the earth is round.
人们相信地球是圆的。
14.It is well-known that + 句子
例句：It is well-known that smoking is harmful to health.
众所周知，吸烟有害健康。
15.It is suggested that + 句子
例句：It is suggested that we should eat more fruits and vegetables.
有人建议我们应该多吃水果和蔬菜。
16.It is crucial that + 句子
例句：It is crucial that we take action to protect the environment.
至关重要的是，我们需要采取行动来保护环境。
17.It is essential that + 句子
例句：It is essential that you complete the assignment before tomorrow.
你必须在明天之前完成作业。
18.It is imperative that + 句子
例句：It is imperative that you arrive at the airport at least one hour before departure.
你必须至少在出发前一小时到达机场。
19.It is recommended that + 句子
例句：It is recommended that you take a rest after a long day of work.
建议你工作一整天后休息一下。
20.It is beneficial that + 句子
例句：It is beneficial that you eat more fish during the winter months.
在冬季的几个月里多吃鱼是有益的。
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