Unit 5 Topic 1【重点词组】1.invite sb. to do sth. 邀请某人做某事2.one of +形容词最高级+ 名词复数3. say thanks/hello/sorry/good-bye to sb.向某人致谢/问好/道歉/告别4. feel/taste/smell/look/sound/seem +adj.5. seem to do sth.seem+adj.it seems that+从句6. a ti...