Chapter 4 Numbers：Everyone’s language

你去過長城幾次？（3）times還可以表示乘。three times seven equals twenty-one. 三乘七等于二十一。in many different ways 用不同的反復法。 in ….way e.g.: however, they nearly all counted in the same way-in tens. 然而，他們幾乎都用相同的方式數數，都是十進制。in this way, he has begun his own private “telephone” service.就這樣，他開始了自己的私人電話業務。please answer my questions in different ways. 請用不同的方式回答我的問題。3. the system of numbers that nearly everyone uses today consists of the numbers from 1 to 9 and 0.現在幾乎每個人所使用的數字系統包括數字1-9和0。consist of 由……構成，相當于 be made up of.e.g.: the football team consists of 11 members 。足球隊由11個隊員組成。the medical team is made up of three doctors and five nurses.醫療隊由三個醫生和五個護士組成。4. the indians first invented and developed the 1 to 9 system of numbers.印度人首先發明并發展了1-9的數字系統。（1）invent 做動詞，意為發明。invention 是（發明），inventor（發明家）（2）invent 與discover的區別：invent 指發明原來不存在的東西。discover指發現原來就存在但是一直不被認識的東西。e.g.: bell invented the telephone in 1876. 貝爾在1876年發明了電話。who discovered american in 1492? 是誰在1492年發現了美洲大陸？5. abacuses are so fast and accurate that people still use them today.算盤運算又快又準確，以至于現在人們仍然在使用它。so …that：……如此……以至于…… so 是副詞，后面接形容詞或副詞。如果后面跟的是名詞，要用such…that..。e.g.: she is so weak that she can’t carry the box.＝she is too weak to carry the box.她如此虛弱以至于搬不動那個箱子。he is such a clever boy that everyone here loves him.他是如此聰明的孩子，以至于這里的每個人都很喜歡他。6. computers are very powerful calculating machines.＝computers are very powerful machines that can calculate.電腦的運算功能非常強大。7. some people call the brain a living computer.一些人把大腦稱為活電腦。call: 稱呼，叫，接復合賓語形式： call＋賓語＋名詞（補語），是稱某人為……e.g.: we call him tom .我們叫他湯姆。8. shakuntala devi is a lady from india with an amazing brain.沙昆塔拉·戴維是一名有著令人驚異的頭腦的印度女士。amaze（v.）使吃驚。 amazement（n.）不可數，驚異，詫異amazing 與amazed 都是形容詞，區別是：amazing 令人驚異的，amazed感到驚異的e.g.: i was amazed to find that he had got 100 marks.由于他拿到100分，所以我感到吃驚。the news was amazing.9. shakuntala’s brain took fifty seconds to find the answer.＝it took shakuntala’s brain fifty seconds to find the answer.＝shakuntala spent fifty seconds to find the answer with her brain.cost, spend, pay, take 都有：花費的意思，但用法不同。