nervous ------紧张Teenager m_____ is inviting teenager to join a writing compositionTeenager m_____ is inviting teenager to join a writing composition-------你的句子有问题。核实一下吧。 追问Teenager member is inviting teenager to join a writing compositiontangram_guid_1361318058531tangram_guid_1361318188953 正确的表达是：A teenager member is inviting teenagers to join a writing composition????member要不要加s不要加s, a teenager member是单数形式句首没有A，要不要加s如果没有a, 情况就是1 the teenager member2 the teenager members 3 teenager members (这三种情况)