显然，
3) It is urgent for the government to take measures to control the birth rate in our country/ to 把沙漠变为良田.
政府迫在眉睫的是
4) It is necessary for us to build more hospitals, shopping centers, recreation centers, cinemas, and other public facilities to 满足the increasing needs of the people.
我们必须建立
2. have trouble/ difficulty/ a hard time/ a difficult time (in) doing sth (有困难做某事)
他很难找到一份满意的工作。 He has trouble finding a satisfactory job.
have trouble with sth. (对...有困难,不好对付) I have some trouble with my English study.
七、举例表示法:
1. For example, the people’s economic status has been greatly improved.
2. For instance, the economic status of the people has been improved.
3. Let’s have an example. TV sets, refrigerators and recorders have become household necessities.
八、结尾句型:
翻译下列5句中的汉语部分：
1. __________ (依我看), I am in favor of (or am opposed to) owning a private car.
2. __________ (就个人而言), I prefer to work in the country rather than in the city.
3. __________ (总之), parents and children should learn to get through to each other. Only in this way can the most difficult problems be solved properly.
4. __________ (最后), we cannot achieve success without hard work.
5. __________ (至于我), I agree with the opinion that “ No pains no gains.”
附录：英语作文练习
练习一
（动物保护）要求：
1.动物数目减少成为一个重要的环境问题
2.动物数目减少的原因
3.我们应该怎么办
（问题陈述 原因分析 建议措施 ）
Animals are essential in an ecosystem. But for various reasons the number of animals decreases to an alarming degree. All over the world, biological diversity has already become a key environmental issue.
Scientists from many fields generally attribute this phenomenon to three reasons. To begin with, human activities reduce the number of animals. For instance, the living areas of human beings enlarge gradually while the areas for animals shrink. As a result, animals die out. Next, natural evolutions also make some animals extinct. Moreover, some diseases among animals also cut the population of animals.
How to address this issue? Two approaches have been suggested. One is that humans should protect some rare animals. The other is that human must provide animals with a sound environment for them to survive and thrive.
练习二
（如何看待汽车这把双刃剑）要求：
1.汽车给人们带来的好处。
2.汽车产生的问题
3.我对汽车的看法。
Since their coming into being, automobiles have been significantly contributing to human industries, agricultures, and even the daily lives.
It is automobiles that have been shaping and reflecting the ways humans work and think. They accelerate the sustainable economic development. They boost industries. They also catalyze scientific research.
But nobody can deny that automobiles have also exerted some unfavorable impacts on social and economic fabric. First of all, they have seriously polluted the environment in which humans survive. Secondly, traffic jam wastes lots of time. Finally, they also waste the money, especially in metropolis.
My opinion is that in the foreseeable future, scientists will be able to solve all problems. Exactly, human will eventually be able to minimize the harmful effects of automobiles, whereas their advantages can be maximized.
练习三
要求：
1) describe the cartoon,
2) point out its implications in our life.
This cartoon presents in front of us a sharp contrast between two types of neighbors. The two pet neighbors greet each other politely and amiably while the two lonely human neighbors seem to ignore each other. When taking a walk in any of the cities in the modern society, we can often observe such a sad scene in which social interactions have been grievously diminishing.
Among urban residents, pet-keeping is becoming increasingly pervasive because a pet may be a companion for old people, a friend for young couples, and a playing toy for children. Believe it or not, pets are such an inseparable part in their daily life that they often devote lots of energy, time and money to taking care of the needs of their loved animals. Small wonder, such devotion to pet-raising points to a truth of great importance today — loneliness in a busy world. 
小编建议：英语作文