湖北省随州市洛阳镇中心学校九年级英语下册 Unit 4 Amazing Science Topic 2知识点汇编 仁爱版.doc

unit 4 amazing science topic 2知识点汇编allow “允许、准许”的意思。常用于以下几种形式： (1) allow +n./prep 如： we cant allow such a thing.我们不容许这种事情发生。 (2) allow sb. to do sth 允许某人做某事 如： she allowed me to go fishing.她允许我去钓鱼。 (3) allow +doing sth 允许做某事 如： we dont allow smoking in the reading-room.我们不允许在阅览室吸烟。 (4) be allowed to do sth 如：被允许做某事 the students are allowed to play games on the play ground after school.放学后学生们被准许在操场上做游戏。2.its made from wood.它用木材做的。 (1) be made in 在地方制造，后接表示地点的名词。 (2) be made of 用制造的，表示原材料未经化学变化，仍可看得出原材料。 (3) be made from 用制造的，表示原材料经过化学变化，已看不出其原样。 (4) be made by 由（被）（人）制作，后接表示人的名词或代词。 (5) be made into （某物）被制成 (6) be made up of 由组成 如： the tv set is made in japan.这台电视机是日本生产的。 these houses are made of stones.这些房子是由石头建造的。 paper is made from wood.纸是木头造的。 was this cake made by your mother?这蛋糕是你妈妈做的吗？ metal can be made into all kinds of things.金属可以制成各种各样的物品。 the medical team is made up of ten doctors.这支医疗队由10位大夫组成。4. its used for helping us to improve our english.它用来帮助我们提高英语水平。 (1) be used for+ving be used to do （被）用来做 强调用途或作用 (2)be used as （被）作为而用，强调被当作工具或手段来用。 (3)be used by 被使用，by后跟人/物，强调使用者。eg：pens are used for writing.钢笔被用来写字。wood is used to make paper.木材被用来造纸。english is used as a foreign language in china.英语在中国被当作外语使用。recorders are often used by english teachers.英语老师经常使用录音机。5. they will no longer want to be our servants, but our masters. 它们将不再愿意做我们的人，而要做我们的主人。 no longer（通常在动词前），notany longer; notany more（用于非正式文体中）都可表示“（过去曾）现在不再” eg: she no longer lives here. =she doesnt live here any longer(或 any more). 她不在这儿住了。（过去她曾住这儿）7. this method worked well at night as long as the weather was good and the stars could be seen.在夜间只要天气晴朗，能看见星星，这种方法就能很好地发挥作用。 work well 有效 eg：chinas one-child police works well in controlli