When it comes to (关于A所在的集合名词), I have to say there are many (I want to tell you about), such as ……but these are not my choices. For …, I vote for A
I personally think …I personally don’t think ….
Chicken soup helps to fight a cold.
Special chemical stops a cold from getting worse.
People can get enough protein and be healthy by eating tofu, eggs, nuts.
Food gives people the chances to learn more about other cultures.
We use internet to communicate in many different ways.
It is good way to do sth
Overeating has negative/great impact on human beings’ health.
it is good/unhealthy for sth/sb (not)to do
the ancients used stone or wood to make tools.
I am writing a paper for my English class.
起因 (Why2) (对齐)
Chocolate causes pimples.
Eating too much and not exercising can cause us to gain weight.
Using too much of the energy may cause the problem
The cause is stress or not getting enough sleep.
Adding fattening things like butter to bread can raise the number of calories we eat.
We eat because we are hungry.
The reason why Americans love pizza is uncertain.
May be that’s why there are fewer people than I thought.
The mistake may lead to a serious accident.
Thanks for Chinese paper invention, people use money made of paper
Without paper invention our lives would be very difficult.
If I get tired, my mother will let me get some sleep.
People like to eat junk food when/before/after they are happy, sad or worried.
I prefer eating in Chinese restaurants where I can enjoy the Chinese way of life
It is a belief that …
it is wonderful/terrible experience that… /for sb to…(learn more about myself, see the world in a new way, change the way people work, learn, behave)
Food is life for sb to do sth
Chicken soup is a good cold remedy.
Soccer is one of most important games in the world
No one could work with greater intensity than Edison.
It is hard to imagine what life today would be life without computers.
A plays important/great part on (change the way people work, learn, behave, Communicate/the way of living/ the crime rate)
数量/程度 (How many/much)
There are seismic changes in the way people communicate/talk/behave.
There's been a tremendous improvement in (socially security) over the last a few years, due to A
The government began to think about introducing a new law.
What we eat becomes a part of us
The government decide to introduce a new law to …
A study in 2002 showed that…
It has been found that…
According to a group of specialists who carry out…
About/more than/less than 40% of the restaurants in this city is local.
如：Food is life.
解释It gives people the nourishment we need to stay alive and be healthy.
如：people enjoy variety of sports in the USA(主题句)
分例1in warm weather, people enjoy water sports….
分例2When the first snow comes, people delight in freezing fun…
分例3Americans also enjoy indoor sports whatever the weather…
如：Internet changes the way people communicate with each other(主题句)
实例I remember when I was a kid, I wrote people letters. Now it’s not the same, you know, just sitting home before my laptop and chat with people all over the world through the internet.
Not all Americans play sports for fun; some Americans see sports as a religion.
Not only do Americans play sports for fun, but they treat sports as a religion as well
Besides playing sports for fun, Americans see sports as a religion
Americans do not just play sports for fun; they see sports as a religion.
How does a food have impact on human’s childhood memories? Professor Wansink believes that …
Do man and women choose different kinds of food? Wansink’s research at the University of Illionois says “Yes”
To communicate with sports nuts, it helps if you talk sports.
What a relief to have security guard around us.