2.表示好处1)It has the following advantages.2)It does us a lot of good.3)It benefits us quite a lot.4)It is beneficial to us.5)It is of great benefit to us.例如：Books are like friends. They ca
3.表示坏处1)It has more disadvantages than advantages.2)It does us much harm.3)It is harmful to us.例如：However， everything divides into two.Television can also be harmful to us. It can do h
4.表示重要、必要、困难、方便、可能1)It is important(necessary，difficult，convenient， possible)for sb.to do sth.2)We think it necessary to do sth.3)It plays an important role in ou
1. Anthropologists have discovered that fear, happiness, sadness, and surprise are universally reflected in facial expressions.人类学家已经发现，恐惧，快乐，悲伤和惊奇都会行之
1. From what I have mentioned above, we can see clearly that violence on TV has great influence on youngsters’ behavior.从上面我所提到的，我们可以清楚地看到，电视暴力对青
1. With the opening and reform policy being carried out, thousands upon thousands of foreign visitors are crowding into our country. They are eager to see this old mysterious land with a splendid cult
1. On no account can we ignore the value of knowledge.我们绝对不能忽视知识的价值。2. It is time the authorities concerned took proper steps to solve the traffic problems.该是有关当
1. We should get into the habit of keeping good hours.我们应该养成早睡早起的习惯。2. The condition of our traffic leaves much to be desired.我们的交通状况令人不满意。3. Smok
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