Unit 1
1. Mr. Doherty and his family are currently engaged in harvesting the autumn crops on the farm.
2. We must not underestimate the enemy. They are equipped with the most sophisticated weapons.
3. Having been out of a job for three months, Phil is increasingly desperate.
4. Sam, as a project manager, is decisive, efficient, and accurate in his judgment.
Unit 2
1. The village is so close to the border that the villagers live in constant fear of attacks from the enemy.
2. This country has transformed into an advanced industrial power in just 20 years.
3. The company has evolved into one of the main chemical production bases in the region.
4. Given the current financial situation, the further devaluation of the dollar is inevitable.
5. The government has called for public suggestions on controlling water pollution, but the response has not been strong.
6. Helen majors in economics at university and studies philosophy as her second major.
7. Most girls believe that with their support, there is a great chance of winning the election for student council president.
Unit 3
1. Despite the inadequate length of the airstrip for this emergency landing, the veteran pilot managed to... （注：此句不完整，缺少后续内容）
Unit 4
1. Man and Nature by Alexander Sobkin
Humans live in the kingdom of nature. We are constantly surrounded by and interact with nature. The air we breathe, the water we drink, and the food we eat all make us constantly aware of nature's influence. We are intimately connected with nature； without it, we could not survive.
Because nature is wild and frightening, humans have tried to reduce its area. All this is done in the name of "civilization"