B) 用括号中所给动词的适当形式完成句子。
1. I heard Peter (sing) a song when I walked by.
2. He watched his little sister (dance) in the living room just now.
3. In the kitchen, we watched the cook (make) pizza from start to finish.
4. I saw my mom (take) the clothes and put them in the box.
5. He looked out the window and saw a woman (wait) for the bus in the rain.
6. I notice a man (cross) the road and enter the bank.

1. singing 2. dancing 3. make 4. take 5. waiting 6. cross

Ⅰ. Observe the words and sum up the rules. Then change the nouns into adjectives by adding the suffixes. 观察下列词汇并总结规律,然后通过添加后缀将下列名词变为形容词。需要时可使用词典。
1. tradition-traditional centre-central nature-natural
在部分名词后加后缀,可将其变为形容词。
2. fame-famous humour-humorous danger-dangerous
在部分名词后加后缀,可将其变为形容词。
3. power-powerful beauty-beautiful colour-colourful
在部分名词后加后缀,可将其变为形容词。
4. fun-funny wind-windy rain-rainy
在部分名词后加后缀,可将其变为形容词。
5. effect-effective act-active create-creative
在部分名词后加后缀,可将其变为形容词。
6. self-selfish fool-foolish child-childish
在部分名词后加后缀,可将其变为形容词。
nation- person- mystery-
continue- wonder- pain-
health- cloud- attract-
expense- style- boy-

1. al 2. ous 3. ful 4. y 5. ive 6. ish national, personal, mysterious, continuous, wonderful, painful, healthy, cloudy, attractive, expensive, stylish, boyish