好多老师又要忙着为同学们写教案、备课。教案的制作需要清晰地思路，条理的章程，精品学习网编辑了高三英语教案重点难点：Lesson 25，欢迎老师们参考借鉴!

1. Tang Ling and Bob are building an outdoor platform for plays and concerts at the university. 唐玲和鲍勃正在大学里搭一座平台供演戏和举办音乐会之用。outdoor. adj. 户外的;反义词是indoor; outdoor labour 户外劳动;outdoor sports 户外运动;an outdoor life 野外生活;outdoors. adv.在户外;在野外;e.g. It’s cold outdoors. Please put on your overcoat if you go out. 外面很冷，如果你要出去，请穿上大衣。In hot countries, it’s possible to sleep outdoors in summer. 在热带国家，夏天睡在外面是可以的。Farm workers spend most of their time outdoors. 农民们的大部分时间是在户外度过的。Next Sunday, students of Class Four will go outdoors for a picnic. 下星期天四班的学生将出去野餐。

2. The wall behind looks a bit gray and dull. What can we do to make it look less ugly?后面的墙看上去有点灰并显得单调，我们该怎么办才能使它不显得那么难看?dull adj. 阴暗的;枯燥的;头脑迟钝的; A dull knife 钝刀;a dull story 索然无味的故事;a dull sky 阴沉的天空;The girl has a dull mind. 那个女孩子头脑愚笨。All work and no play makes Jack a dull boy. 整天学习不玩耍;聪明杰克也变傻。

3. Then we can do some drawings on it. 然后可以在上面画些画。do 后面加动名词做宾语，这些动名词前常常有some; much; no; the; one’s 等词修饰。e.g. do some shopping 买东西;do some washing 洗衣服;do some telephoning 打电话;do some cleaning 搞卫生;do no studying 不学习;do much sightseeing 四处游览;do much reading 大量阅读;

4. A week? As long as that? 一个星期?要那么长的时间吗?

5. It may be necessary to put up a notice saying “ Keep off ”. 也许有必要竖一块牌子，上面写上“请勿践踏”。1). It is necessary for sb. to do sth. 某人有必要做某事; e.g. It is necessary for you toread English everyday. 你有必要每天早晨读英语。It isn’t necessary for you to work all day. 你不必整天忙于工作。It is necessary + that clause. 从句用虚拟语气(should + 动词原形; 或者省去should, 直接用动词原形)e.g. It is necessary that we (should) get everything ready by tonight. 我们有必要在今天晚上把一切都准备好。 It is necessary that he (should) come here every week. 他每周都必须来这儿。It is necessary that he (should) return the book tomorrow. 明天上午他必须还书。 类似It is necessary + 含有虚拟语气的that clause 的句型还有：It is suggested that…; It is required that…; It is ordered that…; It is important that…; It has been decided that…; e.g. It is required that Helen give a performance at the party. 有人要求海伦在聚会上表演一个节目。It has been decided that the sports meet be put off till next Thursday. 已经决定运动会延期至下周四举行。It is proposed that this question be discussed at the next meeting. 有人提议在下次会议上讨论这个问题。It is

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6. suggested that we should start early tomorrow morning. 有人建议我们明天早点出发。It was ordered that he stay in bed for another three days. 命令他再休息三天。2). keep off 避开;挡住; 推迟;e.g. Keep off the grass. 请勿踩草坪。Please keep off the subject. 请勿谈此事。Keep your hand off! 勿用手摸!If the rain keeps off, we shall go out. 如果这雨一时半会儿还不下，我们就出去。