外研社必修一moudle5演示课件.docxVIP

When you heat a metal, it expands.P41当你给金属加热时，金属就会膨胀。expand vi.膨胀；张开；展开；扩大vt.扩张；扩展[来源:学科网ZXXK]Expand this sentence into a paragraph.把这个句子扩展成一段文字。China is ready to expand cooperation with Greece and help the country through its current difficulties.中国愿扩大与希腊的合作，帮助该国度过目前的困境。expand ...into ...把……扩展成……expand on/upon sth.详述某事；充分叙述某事expansion n.扩张；膨胀；扩大expanded adj.膨胀的；扩大的expansive adj.易膨胀的，易扩张的，广阔的expansively adv.可扩张地，辽阔地Metals expand when heated and contract when cooled.金属热胀冷缩。His company expanded into a big one.Expand（尺寸。数字、数量等）扩大，增加（活动量），扩大（活动范围）Extend延伸，延长（建筑或道路，时间等），扩大（控制，影响力等）Stretch 拉紧（绳子），伸长（脖子），伸展手臂，腿，身体stretch oneself out（on）平躺When you heat a metal,it contracts.当你给金属加热时,它会收缩。P41contract v.(使)收缩；和……订合同;n.契约，合同If you ice the metal,it will contract.如果你冷冻金属，它就会收缩。We contracted with a shoe factory for 4,000 pairs of shoes.我们和一家鞋厂签订了一份4 000双鞋的合同。He made a two-year contract of employment with the firm.他和那家公司签订了两年的雇用合同。make a contract with 与……签合同sign a contract签署合同carry out a contract 履行合同cancel a contract取消合同break a contract违反合同by/on contract按照合同；依约Two-thirds of the earths surface is water.（P41）地球表面的三分之二被水覆盖。分数作主语One-third of the students dont know the answer to the question.三分之一的学生不知道这个问题的答案。One-third of ones life is spent on the bed.人一生的三分之一是在床上度过的。分数或百分数＋population作主语时，谓语动词常用复数形式。Two-thirds of the population in that country are peasants.那个国家三分之二的人口是农民。half, quarter, most, percent, rest等词作主语时，谓语动词和这些词之后的名词或代词在人称和数上保持一致。Most of the water was used by Mary；the rest of it was used by me.大部分水被玛丽用了，我用了剩下的那部分。提示：①在英语中，表示分数时，分子用基数词，分母用序数词；②分子大于1时，表示分母的序数词加-s。③有时在分子和分母之间加上连字符“-”。④一些特殊分数的表达：1/2　a/one half；1/4　a/one quarter或a/one fourth；3/4　three-quarters或three-fourths“分数(百分数)＋of＋名词(代词)”作主语时，谓语动词的单复数形式取决于of后的名词或代词的单复数形式。conclusion n.结论；断定；结束；结局；协定，协议What led you to this conclusion?你是如何得出这个结论的？They came to the conclusion that someone had broken into the room and stolen something important.他们得出的结论是有人闯入房间偷走了重要的东西。conclude v.结束；断定;订立conclusive adj.最后的；结论性的；确定性的in conclusion 最后；总而言之