【正文】
1).Find more words which are posed of prefix and suffix, such as able,ful, less, im,re,un” as many as possible. 2). Make sentences with the words you find.( petition :say as many sentences as you can 綜合運用 the sentences with the correct form of the words in the box to school is both _________ and environmentally friendly. really need to be ________ with things bad to the environment. can do a little bit to help with __________ problems is ________ to throw away the ________ shopping bags are ________ about new ways to save energy b. Complete the conversation with the correct form of the phrases in the box: Mike: I hear you’re off t o the Caribbean for a long holiday! Lucky you! But aren’t you __1_____ the dangers of such long flights on the environment? Ken: Why should I be worried? Mike: Planes cause_____2______. Ken: I know, but what can I do about it? I already try my best recycle, I don’t just __4_____ things if I don’t want them any more. I __5_____ the lights when I leave a room. Don’t tell me we shouldn’t travel by plane any more! Mike: No, of course n