u7 the natural world word power校本作业 基础知识巩固 一、请为与后缀ly相关的三类变化各举三个例子 （例：bad→badly） 类别 例1 例2 例3 1. 形容词变副词 quick→ slow→ careful→ 2. 名词变形容词 love→ month→ 3. 名词变形容词 likely→ lonely→ silly→ 二、请为加后缀ly的三种情况各举三个例子 类别 例1 例2 例3 1. 直接加-ly 2. 词尾为le，变e为y 3. 词尾为y，先变为i，再加ly 三、用括号中所给单词正确形式填空 Protect the coral reef A coral reef is like a magical underwater city. It is full of colourful fish, strange sea plants and amazing coral. In this beautiful place, small fish swim (1) _____ (quick) among the coral, looking for food. Big sea turtles move (2) _____ (slow), as if they were taking a peaceful walk. Crabs crawl (爬行) (3) _____ (careful) in the sand, trying not to be noticed. Some small shrimps (虾) work (4) _____ (real) hard to clean the coral reef. However, humans are making trouble. Some boats make loud noises when passing by coral reefs. That is not (5) _____ (friend) to the sea animals. We also fish too much and pollute the sea. These human activities are hurting coral reefs, and many sea animals are losing their homes. We need to act now. Let’s stop polluting and protect coral reefs. Only in this way can we keep this type of amazing ecosystem alive. 技能拓展提升 一、阅读短文，回答问题 The sea water has turned red by the beaches of Sydney. The beaches are closed and swimmers are afraid to go swimming in the sea. Moreover, the water looks bright in the dark. This is called a "red tide (赤潮)". It is only a natural phenomenon (现象) and has nothing to do with the end of the world. The red colour comes from a kind of bacteria (细菌) that grows in the water. The reason why the water has turned red is that the temperature in the water is just right to make these bacteria grow. Some of the red tides can smell bad and let off gases (气体) that can hurt the skin. That makes people uncomfortable. Some can even be harmful to fish because there will be little oxygen in the water. Are these tides always red No. There are tides that have no colour or a colour of pink or green. Different colours depend on different kinds of bacteria causing the tides. 1. What causes the sea water to turn red 2. Why can red tides be harmful to fish 3. What colours can red tides be 4. How can understanding red tides help us protect the environment 二、根据首字母提示填空，补全短文 Our ecosystem is like a big, wonderful home for all living things. It (1) i_____ plants, animals, and the environment around us. There are many kinds of (2) w_____ in the ecosystem, from cute little squirrels in the forest to colourful fish in the ocean. (3) S_____, our ecosystem is in great danger. People are cutting down too many trees, making the forest smaller. (4) T_____, many animals are losing their homes and food. Factories are noisy and give out (5) h_____ gases. These human activities (6) c_____ serious problems. They pollute the air we breathe and the water we drink. We must take (7) a__ ... ...
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