Eg1: It is said that …据说/相传
Eg2：I suggest that … It is suggested that …
Eg3：Effective measures should be taken before things get worse.表建议
Eg4: your prompt attention to my enquiry would be highly appreciated. 表感激
Eg5：Students should study hard.
Students are expected / well-advised to study hard.
Eg1：What worries many parents is that Internet or computer games may impact kids’ study.
Eg2：It is said that an emperor of ancient China discovered Tea 5,000 years ago. (it为形式主语;that从句为真正主语)
Eg1：Many Americans live on credit, and their quality of life is measured by how much they can borrow, not by how much they can earn.
Eg2: I am convinced that it is of great necessity for youngsters to study hard.
Eg3：明智的人不为别人的想法所影响。The sensible man is not influenced by what other people think.
Eg1：That is why China is called the “Kingdom of Bicycles”.
Eg3：In team games, practice is what improves our sense of cooperation.
Eg1：(Martin Luther King) I have a dream that one day this nation will rise up and live out the true meaning of its creed: "We hold these truths to be self-evident, that all men are created equal." (该句中a dream = that 从句，)
Eg2：Others hold the different idea that online shopping brings us some problems.
Eg. I am convinced that …
As a college student, I am convinced that …
I, as a college student, am convinced that …
② 物 性质
Eg. A strong will brings us power …
As a vital quality, a strong will brings us power…
A strong will, as a vital quality, brings us power…
Eg1：As I see, the causes of this phenomenon are diverse.
The causes of this phenomenon, as I see, are diverse.
Eg2：All of a sudden, the silence of the lake was broken by a scream.
The silence of the lake, all of a sudden, was broken by a scream.
Eg3：Even so, others hold a different view.
Others, even so, hold a different view.
Eg4：Like anything else, automobiles have more than one side. (汽车跟很多其他事物一样，具有两面性)
Automobiles, like anything else, have more than one side.
2)在中心名词后加入定从，关系词who, whose, whom, where, which, when
Eg1：Taobao is a particularly popular website. ? Taobao is a particularly popular website, where/in which customers can purchase various goods.
Eg2：I will advice my foreign friend to visit Great Wall, where he or she can acquire knowledge of Chinese history?
(1)形式主语 it is +被动/形容词/名词+that从句/to do …
Eg1：It is suggested/ well-advised / supposed / proposed that sb. should (not) do …
Eg2：It is essential / necessary / advisable / convenient/ difficult/ hard/ comfortable for sb. (not) to do
Eg3：It is essential / necessary that sb. should (not) do …
Eg4：It is useless/useful doing sth.
Eg1：An increasing number of students find it difficult to spell common words correctly.
Eg2：An increasing number of parents find it hard to have opportunities to chat with kids, who spend too much time on computers.
Eg3：A host of youngsters find it rather boring and hard to understand literature.
Eg1：I love you. /I do love you. / I did love you.
Eg2：Cell phone/ Internet/ computer brings us convenience.
Cell phone/ Internet/ computer does bring us convenience.
(2)强调句式：It is/was +被强调成分+that/who+句子其他成分
b. 在被强调成分(除谓语和补语外)两边添加it is/was 和that/who， 其他成分不变，必要时调整顺序。
强调句式特征 去掉it is/was…that/who结构，整个句子无冗余或成分残缺
Eg1：My mother always encourages me not to lose heart when I have difficulties in study.
It is my mother who/that always encourages me not to lose heart when I have difficulties in study.
It is when I have difficulties in study that my mother always encourages me not to lose heart.
Eg2：Parents’ protection does not enable kids to build up adequate ability to face social competition.
(强调句式否定形式)It is parents’ protection that does not enable kids to build up adequate ability to face social competition.
Eg3：The Internet does not enable some youngsters to spend adequate time in chatting with others face to face.
It is the Internet that does not enable some youngsters to spend adequate time in chatting with others face to face.
(1)表否定的副词、短语或状语位于主语之前或句首，主句半倒装(一般疑问句语序);如never, seldom, hardly, scarcely, little, on no account, by mo means, in no case,
Eg1：I will never agree. Never will I agree.
Eg1：When my beloved is beside myself, I can feel the true happiness.
Only when my beloved is beside myself, can I feel the true happiness.
Eg2：When his computer crashes, he will come down-stairs for something to eat.
Only when his computer crashes, will he come down-stairs for something to eat.
Eg3：By doing small things, teenagers can accumulate ability and experience for something big.
Only doing small thing, can teenagers accumulate ability and experience for something big.
Eg1：Although she is a girl, Zeng Yike is called Brother Zeng.
Girl as she is, Zeng Yike is called Brother Zeng.
Eg2：Though it is convenient, online shopping leads to some problems.
Convenient as/though it is, online shopping leads to some problems.
Eg3：Although it is simple, what the picture conveys is thought-provoking.
Simple as it is, what the picture conveys is thought-provoking.
Eg1：no ____ is / are more _____ than ________.
In contemporary society, no means of communication is more popular and common than cell phones.
Eg2：A strong will is very important.
The importance of a strong will cannot be too emphasized.
Eg3：Education helps people to acquire knowledge, skills and new visions.
Without education, it is impossible for people to acquire knowledge, skills and new visions.
Eg1：I climbed the stairs. I took a suitcase.
I climbed the stairs, taking a suitcase.
Climbing the stairs, I took a suitcase.
Eg2：When they are compared with cars, bicycles are superior in several ways.
Compared with cars, bicycles are superior in several ways.
Bicycles, compared with cars, are superior in several ways.
Eg1：He had lived in this city for years. He had no difficulty finding the way home.
Having lived in this city for years, he had no difficulty finding the way home.
Eg1：Studies serve for delight, for ornament and for ability.
Eg2：We shall fight on the hills. We shall fight in the streets. We shall fight blood and sweet and tears.
As a vital quality, confidence brings us power, arouses our enthusiasm for life, and helps us to conquer difficulties.