【词，句重难点课件】Unit 3 Period Ⅰ外研版（2019）必修三

(共20张PPT)
Unit 3
The world of science
Period Ⅰ
Starting out & Understanding ideas
01
02
句子控
模块
导航
词汇斩
定向练1
在空白处填入括号内单词的正确形式。
1．In modern times, people are under constant ________ (press) at work although they have more opportunities.
2．In any unsafe situation, simply ________ (pressure) the button and a highly trained agent will get you the help you need.
【解析】
1．pressure　句意为：在现代，人们在工作中承受着持续不断的压力，尽管他们有更多的机会。under pressure意为“承受着压力”。
2．press　句意为：在任何不安全的情况下，只需按下按钮，训练有素的代理人即可为您提供所需的帮助。此处为“祈使句＋and＋陈述句”结构，这一句型中，祈使句表示后面陈述句的条件，相当于if引导的条件句。
词汇斩
3．As long as we relieve ________ (press) in a proper way, we can relax ourselves and keep away from its bad effects.
4．Regardless of the weather, the press conference will ________ (hold) on time.?
【解析】
3．pressure　句意为：只要我们采用适当的方法缓解压力，我们就可以让自己放松，并且远离它的不良影响。
4．be held　句意为：不管天气如何，新闻发布会都将按时举行。the press conference与hold之间为被动关系，故用被动语态。
词汇斩
定向练2
在空白处填入1个适当的单词或括号内单词的正确形式。
1．The movie ________ (shoot) in New Zealand last year.
2．The boys shot ________ the balloons.
【解析】
1．was shot　句意为：这部电影是去年在新西兰拍摄的。句子主语movie和shoot之间是被动关系，由last year可知shoot的动作发生在过去，设空处应用一般过去时的被动语态；The movie为单数形式，谓语应用单数形式。
2．at　shoot at意为“向……射击”。
词汇斩
3．With the number of homecoming (回国) overseas students shooting ________ in recent years, the attraction of foreign degree holders has gradually faded.
4．Two weeks after we’d planted the seeds, little green ________ (shoot) started to appear.
【解析】
3．up　句意为：近年来，由于回国留学生人数激增，外国学位持有者的吸引力逐渐减弱。根据句意可知，此处表示“陡增”，故填up。
4．shoots　句意为：我们播下种子两周后，绿色的小苗开始钻出来。shoot在本句中意为“芽，幼苗”，为可数名词，此处表示复数含义，故用复数形式。
词汇斩
5．Jenny was very sad about the loss of the photos she ________ (shoot) in Canada.
【解析】
5．had shot　句意为：珍妮在加拿大拍摄的照片丢了，这让她很难过。本题中主句为一般过去时，she ________ in Canada为定语从句，修饰the photos，从句谓语所表示的动作发生在主句谓语所表示的动作之前，故用过去完成时。
词汇斩
定向练3
用in addition或in addition to填空。
1．Our energy bills have been increasing steadily. ________________ these costs, our telephone costs have doubled over the past six months.
【解析】
1．In addition to　句意为：我们的能源开支一直在稳步增长。除了这些费用，我们的电话费也在过去的六个月里翻了一番。
词汇斩
2．________________, the team set up a separate experiment which suggested that the baby birds that most closely imitated their mum’s voice were rewarded with the most food.
3．In the company, another 7 jobs are being cut ________________ the 10 that were lost last year.
【解析】
2．In addition　句意为：此外，该小组还做了一项单独的实验，结果表明，模仿母鸟声音最像的幼鸟会得到最多的食物。
3．in addition to　句意为：在该公司，除了去年被裁掉的10个工作岗位之外，还有7个工作岗位在裁撤中。
词汇斩
定向练4
在空白处填入1个适当的单词或括号内单词的正确形式。
1．If you wish your child to have a strong desire ________ (learn), you must first have him understand that he has the ability to gain a sense of achievement through learning.
【解析】
1．to learn　句意为：如果你希望你的孩子有强烈的学习欲望，你必须首先让他明白他有能力从学习中获得成就感。a desire to do sth意为“对做某事的渴望”，为固定搭配。
词汇斩
2．My desire ________ knowledge encouraged me to buy the expensive book.
3．She was tired of the life in the countryside and desired ________ (go) out to the city.
【解析】
2．for　句意为：我的求知欲促使我买了这本昂贵的书。desire for sth为固定搭配，意为“对某物的渴望”。故填for。
3．to go　句意为：她厌倦了乡下的生活，渴望到城市去。desire作第二个并列谓语动词，其后接动词时应接其不定式形式作宾语。故填to go。
词汇斩
句子控
定向练1
在空白处填入1个适当的单词或括号内单词的正确形式。
1．You’ll find taxis ________ (wait) at the bus station.
2．He found the place much ________ (change).
【解析】
1．waiting　wait与其逻辑主语taxis之间为主动关系，故设空处用现在分词形式。
2．changed　设空处为宾语补足语，表示“发生变化的”且前有much修饰，应用形容词。
句子控
3．When she came to life, she found herself ________ (surround) by many people.
4．Mrs Smith finds ________ hard to clear up the mess.
【解析】
3．surrounded　be surrounded by意为“被……围住”，此处用过去分词短语作宾语补足语。
4．it　本句中动词不定式短语为真正的宾语，设空处应用it作形式宾语。
句子控
定向练2
在空白处填入1个适当的单词或括号内单词的正确形式。
1．You are waiting at a wrong place. It is at the hotel ________ the coach picks up tourists.
2．Bach died in 1750, but ________ was not until the early 19th century that his musical gift was fully recognised.
【解析】
1．that　句意为：你等错地方了。长途客车是在旅店接载游客的。
2．it　句意为：巴赫于1750年去世，但是直到19世纪初他的音乐才能才被完全认可。
句子控
3．It’s not doing the things we like, but liking the things we have to do that ________ (make) life happy.
4．Was it in the restaurant ________ you had dinner with me yesterday ________ you lost your handbag
5．Was it because Jack came late for school ________ Mr Smith got angry
【解析】
3．makes　句意为：让生活快乐的不是去做我们喜欢的事情，而是去喜欢我们必须做的事情。
4．where；that　句意为：你是在你昨天和我吃饭的那家餐厅丢了你的手提包吗？
5．that　句意为：史密斯先生生气是因为杰克上学迟到了吗？
句子控
定向练3
用“what引导的主语从句＋is that...”结构翻译句子。
1．最激动人心的是，我们可以在新年来临之际放烟花。(excite)
________________________________________________________________________
________________________________________________________________________
【解析】
1．What excites us most is that we can set off fireworks when New Year is coming.
句子控
2．这个夏令营最吸引我的是我可以参加丰富多彩的活动。
________________________________________________________________________
________________________________________________________________________
【解析】
2．What attracts me most of the summer camp is that I can take part in various activities.
句子控
3．旅游时最让我恼怒的是人们到处乱扔垃圾。
________________________________________________________________________
________________________________________________________________________
【解析】
3．What annoys me most while travelling is that people just drop litter everywhere.
句子控
4．最让我惊讶的是你们两个是亲兄弟。
________________________________________________________________________
________________________________________________________________________
【解析】
4．What surprises me most is that you two are brothers.