A=x+y+z

　　有一次，我要参加学校里的一个卡拉ｏｋ的比赛，我先定下了演唱曲目，我便先唱了几遍看看，突然发现唱到后来感觉肚子里明明有气，但就是呼不出来，我去向音乐老师求助，她建议我天天看中央３套的“音画时尚“栏目，里面有许多歌唱家唱歌，非常好听。我按照老师的话，天天看“音画时尚“栏目，经过我仔仔细细的研究，发现了许多我唱不好的原因：比如他们唱歌的口形都是像在打哈欠，而我不是；他们唱歌时的声音高低能够突然变换，而我不能；……我找出了我的缺点后，照着电视上的歌唱家的口形，一遍一遍的练习，早晨起来我在唱，上学、放学路上我在唱，做完作业、睡觉前我还在唱……只要一有空我就在唱，在练习。比赛前，我早已是胸有成竹，在迎接比赛的到来。终于，功到自然成，我以高分获得了学校演唱比赛的一等奖。

　　现在，你明白我为什么知道ａ＝ｘ＋ｙ＋ｚ的含义了吧。ａ＝ｘ＋ｙ＋ｚ这句话一点也没错！

　　关于五一劳动节英语作文：A flower for my mum
　　A flower for my mum

　　It is Mother's Day today. Liz wants to buy some things for her mum, then an idea comes to her, She comes into a flower shop but a brunch of a flower is very expensive for her. So Liz comes to the hill. She thinks her mother will be glad. But on her way home, she meets many children from Grade 1. They want to give their mother a flower, too. So Liz gives them each one. Liz only left one at last. She wants to pick more, but it's too late, her mother will be worried. So she gives the flower to mum and saysThank you, mum. I love you. Happy Mother's Day'.Her mother is very proud of Liz..

　　I think on next year's Mother's Day, I will give a flower to my mum too, and thank for what she have done for me all these years.

　　Halloweens origins date back to the ancient Celtic festival of Samhain (pronounced sow-in).

　　The Celts, who lived 2,000 years ago in the area that is now Ireland, the United Kingdom, and northern France, celebrated their new year on November 1. This day marked the end of summer and the harvest and the beginning of the dark, cold winter, a time of year that was often associated with human death. Celts believed that on the night before the new year, the boundary between the worlds of the living and the dead became blurred. On the night of October 31, they celebrated Samhain, when it was believed that the ghosts of the dead returned to earth. In addition to causing trouble and damaging crops, Celts thought that the presence of the otherworldly spirits made it easier for the Druids, or Celtic priests, to make predictions about the future. For a people entirely dependent on the volatile natural world, these prophecies were an important source of comfort and direction during the long, dark winter.

　　To commemorate the event, Druids built huge sacred bonfires, where the people gathered to burn crops and animals as sacrifices to the Celtic deities.

　　During the celebration, the Celts wore costumes, typically consisting of animal heads and skins, and attempted to tell each others fortunes. When the celebration was over, they re-lit their hearth fires, which they had extinguished earlier that evening, from the sacred bonfire to help protect them during the coming winter.

　　By A.D. 43, Romans had conquered the majority of Celtic territory. In the course of the four hundred years that they ruled the Celtic lands, two festivals of Roman origin were combined with the traditional Celtic celebration of Samhain.

　　The first was Feralia, a day in late October when the Romans traditionally commemorated the passing of the dead. The second was a day to honor Pomona, the Roman goddess of fruit and trees. The symbol of Pomona is the apple and the incorporation of this celebration into Samhain probably explains the tradition of bobbing for apples that is practiced today on Halloween.

　　By the 800s, the influence of Christianity had spread into Celtic lands. In the seventh century, Pope Boniface IV designated November 1 All Saints Day, a time to honor saints and martyrs. It is widely believed today that the pope was attempting to replace the Celtic festival of the dead with a related, but church-sanctioned holiday. The celebration was also called All-hallows or All-hallowmas (from Middle English Alholowmesse meaning All Saints Day) and the night before it, the night of Samhain, began to be called All-hallows Eve and, eventually, Halloween. Even later, in A.D. 1000, the church would make November 2 All Souls Day, a day to honor the dead. It was celebrated similarly to Samhain, with big bonfires, parades, and dressing up in costumes as saints, angels, and devils. Together, the three celebrations, the eve of All Saints, All Saints, and All Souls, were called Hallowmas.