常用并列连词coordinating conjunctions 平行并列连词: 转折并列连词： 因果并列连词: 选择并列连词:and, bothand, not only but also, neithernorbut,however,while,yetfor,soor,eitheror请用合适的并列连词把每组句子合并为一个并列句。1.Hewastired.Hewenttobed.2.Thechildhidbehindhismothersskirt.Hewasafraidofthedog.He was tired, so he went to bed.The child hid behind his mothers skirt,for he was afraid of the dog.He made a promise.He didnt keep it.He made a promise,but He didnt keep it. Mary is opening the door.John is greeting her guests.Mary is opening the door,
