1. With the promotion of his position, his responsibility is greater.

With his promotion, he took on greater responsibilities.

He felt it unnecessary for him to bear such a responsibility to John again.

He felt it unnecessary to make such a promise to John again.

In her spare time, Mary likes to go shopping. On the contrary, Lucy likes to stay at home and read.

Mary likes to go shopping in her spare time, while Lucy, on the other hand, likes to stay at home and read books.

At best, he is an ambitious man, at worst, he is a heartless and unqualified power seeker.

At best, he is ambitious, at worst, he is a power seeker without conscience or qualification.

We tried our best to persuade him, but we made no progress.

We tried our best to persuade him, but we made no progress.

Unit 2 paragraph a

1. If he is suitable to be the principal, then any student can be the principal.

He is as unfit as any pupil to be a headmaster.

As for her father, she is not sure whether he will accept her and her children.

As for her father, she is not sure whether he will accept her and her children.

Sleeping late is harmful to health, and going to bed early and getting up early is beneficial to health.

Staying up late will do harm to health, while going to bed early and getting up early will do good to health.

The ambassador personally conveyed the president's greetings to the Prime Minister.

The ambassador personally conveyed the President's message to the Prime Minister.

The girl decided to open her heart and tell the police everything she saw.

The girl decided to open her heart and tell the police what she saw.

Unit 3 paragraph a

1. It's incredible that he will accept 500 yuan's haircut.

It's incredible that he charged $500 for a haircut.

When people empower you, you should serve the people wholeheartedly.

The people give you privileges, so you should serve the people wholeheartedly.

The weather forecast is very important, according to which we can decide when to sail.

The weather forecast is very important so that we can decide when to go to sea.

Gunfire broke the usual silence on Sunday morning, and people had a strong premonition that war was coming.

The sound of artillery broke the usual calm on Sunday morning, and people strongly felt that war was coming.

Even if you can't finish reading three pages in a few minutes, you can't finish reading the book this weekend.

Even if you read three pages a minute, you can't finish reading the book before the weekend.

Unit 4 paragraph a

1. Although my grandfather is 70 years old, his hobbies are very wide, from playing chess to climbing mountains.

Although my grandfather is 70 years old, his interests range from playing chess to climbing mountains.

It is strange that Tom's grandmother is still playing with dolls when she is 80 years old.

Surprisingly, Tom's grandmother played with dolls at the age of 80.

His selfless spirit and talent make him suitable for the job that most students dream of.

His selflessness and talent qualify him for the job that most students dream of.

How do you explain his strange dream?

What's your explanation for his strange dream?

The new car that our boss just bought can reach 200 kilometers per hour.

The new car that our boss just brought can reach 200 kilometers per hour.

Unit 5 essay a

1. Their plane disappeared immediately after taking off.

Their plane disappeared after taking off.

At the meeting, the two sides had a heated debate. Reformists put forward many reform measures, while conservatives opposed the proposed reform proposals.

At the meeting, the two sides had a heated debate. Reformers put forward many reform measures, but conservatives opposed the proposed changes.

In the long run, we must learn more scientific and technological knowledge. Besides mastering our major, knowing computer, English and driving is essential in our work.

In the long run, we should learn more about science and technology. Besides our main subjects, computer, English and driving knowledge are also necessary for our work.

In order to have a perfect figure, she does aerobics four times a week.

In order to achieve a perfect figure, she does gymnastics four times a week.

Every morning, some old people chat while exercising in the park.

Every morning in the park, some old people do physical exercise there and chat with each other.

Unit 6 paragraph a

1. She described her childhood as an era full of fantasy and exploration.

She described her childhood as an era full of surprises and discoveries.

Experiments show that non-smokers make fewer mistakes at work than smokers.

Experiments show that non-smokers make fewer mistakes than smokers.

Fans are often valued, not because of their own success, but because the team they support won.

Football fans are usually highly valued not because of their own achievements, but because of their connection with the winning team.

Although the actors' acting skills are superb, the three-hour film still failed to attract us.

Although the actors performed brilliantly, the three-hour film still failed to attract our attention.

Professor Wang is the only doctor I can count on to save my son.

Professor Wang is the only doctor I can rely on to save my son.

Unit 7 essay a

1. Although he said that he had made a lot of efforts in this matter, his success was at least partly due to good luck.

Although he said he had done a lot for this case, his success was at least partly due to luck.

The topic to be discussed is very important because it will determine the future of many people.

The question to be discussed is very important, because it will determine the future of many people.

I will try my best to avoid imposing my views on others.

I will try my best to avoid imposing my ideas on others.

In that case, few people can face up to their shortcomings in character.

In this case, people rarely face up to the defects in their own personality.

University life is called the most beautiful stage in a person's life.

College life is considered to be the best period in one's life.

Unit 8 essay a

1. No matter what difficulties we encounter, we should try our best to overcome them.

No matter what difficulties we encounter, we should try our best to overcome them.

Respecting the old and loving the young is the traditional virtue of the Chinese nation.

Respecting the old and loving the young is a traditional virtue of China.

Today, people from all walks of life are trying to improve their knowledge level to keep up with the development of the times.

Today, people from all walks of life are trying to acquire more knowledge to keep up with the development of the times.

Children especially like cartoons.

Children like cartoons. (like/fancy)

Considering their inexperience, they did a good job.

Considering their inexperience/inexperience/novices, they have done well.