Unit 5 Meeting your ancestors单词课件

课件31张PPT。Book8 Unit51. ______n. 可能的选择; adj. 供选择的；其他的 → ______ adv. 两者选一地
2. ______ n. 精确；准确→ ______ adj.精确的；准确的→ ______ adv.准确无误地
3. ______ vt.&vi.打断……讲话；打岔;暂时中断或中止→ ______ n.中断；打扰
4. ______ vt.假定；设想→ ______ n.假设；假定
5. ______ vt.&vi.（使）锋利;尖锐；清晰 → ______ adj. 刺耳的;锋利的;急剧的 n.__________锐利n.___________削刀；磨具
6. ______ adj. 足够的；充足的；富裕的 → ______ adj.(同义词)alternativealternatively
accuracyaccurateaccurately
interrupt interruptionassumeassumption
sharpensharpampleenough/plenty of/sufficient/abundant/adequatesharpnesssharpenerripen ripe strengthen/lengthen7. _______ n.分析→ _______ vt.分析
8. _______ n.意义；意思；重要性；重要意义 → _______ adj.有重大意义的
analysisanalyzesignificancesignificant
___________ is the first thing. To get an __________number，we must measure
______________. (accurate)accurately Accuracyaccurate⑴ The bell indicating the end of the period rang，____________ (interrupt) our heated discussion.

⑵ Chinese civilization is the only one without ____________ (interrupt) in the world.interruptinginterruption⑴ You must be very careful with this_____
knife.

⑵ A workman must _________ his tools if he is to do his work well.

⑶ Who else has a pencil_______________ ?sharp sharpen sharpener 1.alternative n./adj.
1)我们别无选择只能妥协。
2)你可以选择斗争或者被俘。
3)有几种方案可以代替我们的计划。
除了做…之外别无选择have no choice but to dohave no alternative but to dohave nothing to do but do“别无选择”前有do,后无to;
前无do, 后有to
【即学即练】
完成句子
①我担心我别无选择，只能呆在家里。
I am afraid I _____ _____ ______ ______ ______ stay at home.
②我没有别的办法，只好向警方告发了他。
I_____ ______ ______ ______ ______ report him to the police.
答案：①have no alternative but to
②had no alternative but to2.interrupt vi./vt. interruption n.
1)城市的交通被浓雾阻断了。
2)对不起打扰一下，能不能告诉我去医院的路。
3)打断别人说话是很不礼貌的。链接
cut in / break in 插嘴， 打断
without interruption不间断地
辨析
interrupt / disturb
interrupt sb. 打断某人讲话或正在做的事。
disturb sb.打扰 / 妨碍 / 扰乱某人(使人不能平静或妨碍别人工作、思维或正常秩序)。用interrupt / disturb的正确形式填空
(1) Don't __________ her; she is puzzling over something important.
(2) His speech was constantly __________ by applause. (1) disturb　(2) interrupted
(3)We have to________you，because your speech has gone beyond the time limit.
(4)Playing with mobile phones in class can________other students’ study.
答案：　(1)interrupt　(2)disturb3.assume v.
1)我本以为他是老师。
2)我没看到你的车，所以我以为你出去了。
3)通常认为压力是过多工作所致。
4)假如明天下雨，我们应该做什么？
5)假如那是真的，我们现在该做什么？
6)我们假定能在一周内实施计划并为此努力。链接
assume sb. / sth. to be 假定 / 假设某人 / 某事为……
It is assumed that… 人们认为…
assumption n. 假定，假设
make an assumption认为，假定
on the assumption that 假定；以……的设想为根据
assuming that... 假设/假定……
“假设类”AssumingSuppose/supposingProvided/ProvidingGivenConsidering“鉴于”(that)
从句It is assumed that assume him to be assuming
4.regardless of
1)他想什么说什么，不顾别人的感受。
2)尽管下雨了，他们继续工作。
3)法律要求公平对待所有人，不管种族、民族或者性别。链接
in spite of / despite尽管，虽然
regardless of / in spite of / despite 后加名词或代词，不能直接跟从句
though / although“虽然；尽管”， 引导让步状语从句【即学即练】
完成句子
①不管报酬多少我都要做这份工作。
I’ ll take the job _______ ______ the pay.
答案：regardless of
单项填空
②_______ the difficulties in talking, they can understand each other by body language.
A. Regardless of B. Although
C. Though D. In spite
解析:选A。although与though是连词，后需跟句子，而the difficulties in talking是名词短语，故排除。D项表达有误。故选A。
单项填空
(　　)So we think it is reasonable to assume they lived in these caves, ______ the cold.
A. regardless of B. instead of
C. in terms of D. by means of A5. cut up 切碎，剁碎；
使伤心，使难受
（1）我们把鸡剁成块煮汤吧。
（2）当他朋友拒绝帮助他的时候，他真的很难过。
（3）他建议我们减少我们的日常开支。归纳拓展
cut…in half ＝ cut…into halves 把……切成两半
cut up sth.＝cut sth. into pieces把东西切/剁成碎片
cut away (from sth.)(从某物上)切除、割掉、砍掉、剪去
cut off 切断……的去路/来路，中断(电话通话、供给)；使与外界隔绝
cut down(自根基部分)砍倒；削减，缩小
cut in (on sb./sth.) 打断(谈话)；打搅；插嘴
根据句意填入cut 相关的正确短语
(1) Your article is too long — please cut it __________ to 1,000 words.
(2) You are supposed to cut __________ vegetables before you cook.
(3) I wish Marie would stop cutting __________ our conversation all the time. (1) down　(2) up　(3) in 6.significance n.
significant adj.
1)这项发明具有非常重要的商业价值。
2)总统做了一个具有重大政治意义的决定。
3)几乎没有人意识到这项发现的重要性。
非常重要的链接
significant adj. 重要的；有意义的
短语
be of great / no / little significance非常重要的/不重要的/不太重要的
“be＋of＋抽象名词”结构＝ “be＋adj.”
(这些名词前可用great，some，no, little 等词修饰)be of importance ＝ be important重要的
be of help ＝ be helpful有帮助的
be of use ＝ be useful有用的
be of value ＝ be valuable有价值的
be of benefit ＝ be beneficial有益的；有好处的6. The book is of______ .
A. great significance B. very significance
C. great significant D. very importance
解析:选A。be of 后面跟名词常用来表达性质，名词前可以用形容词修饰，但是very是副词，因此可以排除B、D两项。
A修饰形容词7.somehow adv.
1)别担心。我们无论如何都会把钱弄回来的。
2)不知怎么地，一切都乱套了。
3)我认为她的想法是对的，但是不知怎么地我不能完全肯定。一、单词拼写significance、sharpening、
alternative、interrupt、
accelerated、ample、analysis、
Somehow、primitive、acute、
starvation、category、tentative、
assume、messy、Accuracy、spat、
ripen1.I am fully aware that the patent is of great significance.
2.It is reasonable to assume that he is an acute observer.
3.Somhow, we must stop him from meeting her.
4.Sharpen the knife and cut up pork and mutton.
5.Apparently we have no alternative but to adapt to the environment here.
6.Regardless of our objections, he put forward some tentative suggestions, which interrupted our conversation.