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es. Sample dialogue 3: A: Do you think teenagers should be allowed to have a trip by themselves? B: Yes, I do. They may ask some travel agencies to help them. Explanation 1. sixteenyearolds十六歲的青少年 它相當(dāng)于一個(gè)名詞 ,等于 sixteen–yearold kids. “一個(gè) 16歲青少年的表達(dá)方式 ” a kid of sixteen a kid of sixteen years old a sixteenyearold kid 2. stop doing 停止做某事 He should stop wearing that silly earrings. We two stopped talking. 我們倆個(gè)停止了談話。 3. 主+ seem to do sth. 好像 His temperature seems to be all right. 他的體溫好像完全正常。 (2) seem+名詞 That seems a good idea. 那好像是個(gè)好主意。 I think students should be allowed to do homework with friends. I disagree. They talk instead of doing homework. Sixteenyearolds should not be allowed to drive. I agree. They aren’t serious enough at that age. Do you think sixteenyearolds should be allowed to work at night? No, I don’t. 16歲的孩子開車。 I disagree . I think sixteen is too young. 13歲的孩子們做兼職工作嗎? Do you think thirteenyearolds should be allowed to take parttime jobs ? 。 They are not serious enough at that age. 6. -你家有什么規(guī)定嗎? -噢,我在周一至周五不能外出。助動(dòng)詞有人稱、時(shí)態(tài)和數(shù)的變化。 ?用法:當(dāng)我們不知道誰是動(dòng)作的執(zhí)行者,或者沒有必要指出誰是動(dòng)作的執(zhí)行者,或者只強(qiáng)調(diào)動(dòng)作的承受者時(shí),要用被動(dòng)語態(tài)