the lower part or point of something bottom be happy and satisfied with; not wanting more content surprise greatly astonish in every part of throughout special, more than usual particularly someone or something that is not successful failure extremely good outstanding when water is hot enough to turn into gas boil Keys to Exercise 2 on Page 19:

1. chew　2. astonishes　3. bottom　4. contented　5. particular　6. throughout　7. failure　8. skin

Keys to Exercise 3 on Page 20:

Noun Adjective Noun Adjective enjoyment enjoyable difficulty difficult entertainment entertaining cruelty cruel mouth mouthful honesty honest help helpful fortune fortunate T:Finished?You see it is very important to learn to use the useful words and expressions in the given situation. Only in this way can you gain the ability to use them correctly. It is the same with the learning of grammar. So in the next part, while learning the usages of -ing form, you should also learn them by discovering the usages, summarizing the rules and then you can apply them to speaking and writing. Now let's move on to the next part.

Step 3 Discovering useful structures

T:First you are to read the text once again quickly to find out the sentences in which the -ing form is used, and try to tell the function of each -ing form. 

A few minutes later. 

T:Have you finished your job? OK, let's read them out. 

1. Do you find it funny to see someone sliding on a banana skin, bumping into someone else round a corner, or falling down a hole in the road?

2. His entertaining silent movies are still popular today. 

3. His charming character The little Tramp is well known throughout the world. 

4. That was the problem facing Charlie Chaplin in one of his most famous films The Gold Rush. 

5. Their job is "panning for gold". 

6. Chaplin sits down at the table with his plate and drinking cup. 