However. The two words are of the same meaning. They both mean a turn in the course of events. But is a conjunction and it can join two coordinate parts or two clauses together. While however is an adverb, so when it is used, it cannot join two clauses but can only initiate a new sentence, with a comma followed.

　　4. Students work in pairs to finish Activity Two.

　　(Show the following on the screen. )

　　In a developed country,

　　1. people have nice clothes to wear.

　　2. most people have a home.

　　3. one can get good medical care.

　　4. people have smaller families.

　　In a developing country,

　　1. the families are larger.

　　2. people have few clothes.

　　3. there is often no money for medical care.

　　4. a much larger percentage of the population is homeless.

　　Suggested answers:

　　1. In a developed country, people have nice clothes to wear, but in a poor country people have few clothes.

　　2. In a developed country, most people have a home. However, in a poor country a much larger percentage of the population is homeless.

　　3. In a developed country, one can get good medical care, but in a poor country there is no money for medical care.

　　4. In a developed country, people have small families. However, in a poor country the families are larger.

　　5. A competition. Match the two parts. Put "but" or "however" where it should be. Change the punctuations if necessary.

　　1. Norway is not a very big country.

　　2. They agreed to work together to reduce poverty.

　　3. All goals are important.

　　4. Some children can go to school.

　　5. Many people in developed countries have good food to eat. 　　a.Many other children can only stay home because their parents have no money.

　　b. Every day 799 million people in developing countries are hungry.

　　c. It was not easy to do so.

　　d. It is at the top of the Human Development Index.

　　e. The first important one is to reduce poverty and hunger. 　　Suggested answers:

　　1. d Norway is not a very big country. However, it is at the top of the Human Development Index.

　　2. c They agreed to work together to reduce poverty, but it was not easy to do so.

　　3. e All goals are important, but the first important one is to reduce poverty and hunger.

　　4. a Some children can go to school. Many other children, however, can only stay home because their parents have no money.

　　5. b Many people in developed countries have good food to eat. However, every day 799 million people in developing countries are hungry.

　　→ Step 3 Grammar: although&while

　　1. Have students read through and try to make sense of the following sentences. After that, try to answer the two questions followed.

(Show the following on the screen. )