20xx人教版英语九年级unit13we’retryingtosavetheearth!课件3内容摘要：
cientific studies have shown that shark fins are good for health. Present perfect We should help save the sharks. Modal verbs Grammar Focus Fill in the blanks with the correct forms of the verbs. Joe: _____ you ever ______ (take) part in an environmental project ? Eric: Yes, I have. I ______ (help) with a CleanUp Day last year. It was __________ (consider) the biggest cleanup project this city ____ ever ____ (have). Joe: How many people ____ (take) part? Eric: I _____ (think) more than 1,000 people ______ (e) to help out. Joe: That’s fantastic! I guess everyone in this city is ______ (try) to improve the environment. Eric: Yes, we can’t afford to ____ (wait) any longer to take action! Have taken helped considered had had took think came trying wait Fill in the blanks with the appropriate modal verbs from the box. People __________ think that big things ______ be done to save the earth. Many fet that saving the earth begins with small things. For example, you ____ save may/might must can can wo。阅读剩余 0%
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