赤線の部分がわかりません。

本冊 p.473 で紹介した,三角形の成立条件|b-ck<a<b+c ①が成り立つときa>0,b>0,c>0である理由を考えてみよう。 [検討 ① で, 16-c|≧0であるから,a>0 がわかる。 b≧c のとき,①から b≧c であるから b-c<b+c b>0 よって c>0 b<cのときも、同様にしてb>0, c0 が示される。 ①について 練習 (1) AB=2, BC=x, AC=4-xであるような △ABC がある。 このとき, xの値の範囲を求め ③ 86 よ。 [ 岐阜聖徳学園大) (2)△ABCの内部の1点をPとするとき,次の不等式が成り立つことを証明せよ。 AP + BP + CP < AB+BC+CA (1)△ABC が存在するための条件は 2(x-2)<2<4 三角形の成立条件 \b-c| <a<b+c ←|2(x-2)|=2|x-2| |x-(4-x)| <2<x+(4-x) すなわち 12(x-2)<2から |x-2|<1 よって -1<x-2<1 ゆえに 1 <x<3 a0 のとき また, 24は常に成り立つ。 したがって 1 <x < 3 別解 △ABC が存在するための条件は x+(4-x)>2, (4-x)+2>x, 2+x>4-x が同時に成り立つことである。 90 この連立不等式を解いて 1 <x< 3 40 PD+DC> PC (2) 直線 BP と辺 AC の交点をDとする。 △ABD において AB+AD>BD また,△PCD において ①+② から AB+AD+PD+DC>BD+PC AB+(AD+DC)+PD>(PB+PD)+PC ゆえに よって AB+AC> PB+PC ..... 同様に BC+BA >PC+PA ...... A ... ① D ...... ② P AQB AO \x\<α-a<x<a -0 三角形の成立条件 (b+c>a c+a>b la+b>c ←三角形の2辺の長さ 和は、他の1辺の長さ り大きい ←a> b, c > dならに a+c>b+d ←両辺にPDが出て 消し合う。 CA+CB> PA+PB ③~⑤の辺々を加えると 2(AB+BC+CA)>2(AP+BP+CP) よって AP+BP+CP < AB+ BC + CA ←両辺を2で割る 練習 (1) 鈍角三角形の3辺のうち, 鈍角に対する辺が最大であることを証明せよ。 ③ 87 (2) △ABCの辺BCの中点をMとする。 AB AC のとき 新品 <BAM <<CAMである

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B. Complete the paragraph with words from the box. connection damaged improved normally sharp 1 2 In his book Musicophilia, brain scientist Dr. Oliver Sacks looked at the between music and the brain. He wrote about how music the lives of musicians, hospital patients, and ordinary people. Dr. Sacks also shared the experiences of different people. He gave an example of a man by a lightning strike, which-strangely-left whose brain was 3 him wishing to become a musician at age 42. Another interesting example was of a man whose memory 4 lasted only seven seconds, except when he listened to music. When this happened, his mind became very 5- with a near-perfect memory.

7問わかる方教えてください🙏

17. I really must go and see the dentist. One of my teeth ( Dached has been aching aches is aching ) for weeks. (共立女子大) 18. 1() my homework for an hour when my mother came home. Dam doing have been doing was doing had been doing (大阪経済法科大) 19. She () in the accounting department for 10 years by the end of next month. @has worked will have been working has been working is working 20. When I woke up this morning, I decided I ( ) to get in shape. @want ②wanted 3 will want (国士館大) rode 11 8 (杏林大) had wanted 最頻 (大谷大) boil 21. Yesterday in science class, I learned that water ( ) at 100°C. was boiling boiling Ⓡboils 22. I will ask him about it as soon as he ( ) back. ①come ②comes 23. I'll be back before it ( ). Drain ②rains (国士舘大) will come would have come (立命館大) ③will rain would rain ☐ ☐

英文法･語法問題600です 5問教えてください

( 神奈川大) ④knowing id 13. My best friend and I ( ) each other since we were five. ①have known 2 know 3 knew 14. My friend from Africa () snow until he came to Japan. (日本大) ①has not seen 3 had never seen was never seeing to Joq will have s e seen mi ai odieX SC guiclem ai 15. When Mary was introduced to Mrs. Smith, she realized she ( 2 was meeting Dis meeting ③3 will meet ) her before. olidyed met? 4 had met (東海大 ①have lived 16. At the end of next month, we ( ) here for three years. 3 will have lived 2 live (立命館ナ will live becast at D 17. I really must go and see the dentist. ijem gnols ( Dached One of my teeth ( ) for weeks. 2aches (共立女子 3 has been aching is aching 法

至急です。試験範囲なので教えてください🙏🙏

第1章 □ 13. My best friend and I ( ) each other since we were five. (神奈川大) ④knowing ①have known 2 know 3 knew 24. If it ( ) on Thursday, we will not go to the beach. (西南学院大) ids ①rains would rain ③rained has been rained 14. My friend from Africa ( ) snow until he came to Japan. (日本大) ago. ①has not seen 3 had never seen Joq was never seeing will have seen al ofie S 25. I don't know if our teacher ( ①camera ②come ien ( ) back next week.d( 3comes (東北薬科大) 4 will come gablem at 時制 15. When Mary was introduced to Mrs. Smith, she realized she ( ) her before. elids ③will meet was meeting 3 Dis meeting □ 16. At the end of next month, we ( ) here for three years. had met (東海大) ①leave 3. (this stone adoleft 30 (立命館大) 27. I wonder when he ( ①come ) next. ①have lived live ③will have lived will live betes 26. Turn off the lights when you (br) the room. ( ③will leave cause it ) yded ed Oleaving D (日本大) smod v②coming (nedloqa had come \I\e will come (日本大) ☐ 4.1 was nger in the shopping mall. Dspoken by 17. I really must go and see the dentist. One of my teeth ( ) for weeks. @being spoken Dached 2aches 3 has been aching is aching 18. I ( ) my homework for an hour when my mother came home. (大阪経済法科大) gile@ Dam doing 2 was doing 3 have been doing had been doing (共立女子大) D gaiblod od lliw bled ad lliw blod Hiw 9 ) noitools Intone A 20 Baiblod ai① 5. The room should ( Obe kept ) clean at all times @batept) bear of seeded over Y are gnitisqet need asdⓇ gairinger ai 6. When I came other hat the 東北福祉大) s building Obeing built .89mit in1976e 19. She ( ) in the accounting department for 10 years by the end of next month. ①has worked gatiog me 7. Michael ( ③3 will have been working has been working is working (国士舘大) gnibrawe need asd go ) 1015xib adf to bebrown ead bbw gingle Player three wensed and @has selected has been selecting trode) 1.8 810 Writing 20. When I woke up this morning, I decided I ( ) to get in shape. 杏林大) )vedT 8. C ①want ②wanted 3 will want 4 had wanted sqft 18beads ( 最頻出の項目を、もう一度書いて覚えよう。 ) awon ai dtime.eM nd that ☐ 1. I got your letter last week. I'm sorry (didn't / haven't/back/I/ written). boiling 21. Yesterday in science class, I learned that water ( ) at 100°C. ①was boiling 3 boils (大谷大) (1語不要) (武蔵大) 4 boil ☐ 2. (began / begun / the class / already / had) when I arrived. (1) 22. I will ask him about it as soon as he () back. ⑪come 2 comes bib@ ③will come (国士舘大) wen & Jdgood o 4 would have come (国士舘大) bassaid □ 3. もし天気 (the weather) が良ければ, 私たちは明日泳ぎに行く。 (1語不要) (防衛医科大) 23. I'll be back before it ( Drain ). ②rains wad nodw exey evil Tol nobno ni ( 3 will rain 4would rain ed (立命館大) We (the swimming / weather / will/be/is/tomorrow/go/if) fine. 6

この問題がさっぱり意味がわかりません。誰か詳しく解き方を教えてくないでしょうか？

5 次の各文で同格の関係にあるもの2つに下線を引きなさい。 1. The news that he was dead was true. 2. Mr. Palmer, a friend of my father's, came to my house yesterday. 3. There is little hope of his recovery. 4. We all wanted to meet John Lennon. 5. I, an American, admire J. F. Kennedy's leadership. 6. There is no doubt that he will pass the exam.

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っと く まずだよ。 first time? When did you play the guitar for the P4 I think it was about 21 Try it out! 内の語句を並べかえて、英文を完成させましょう。 1. My father bought some yakitori for me, but when he came home, (dinner/I/ had already/finished). 2. We (about/worried / had / been / him/ until) he showed up. He finally arrived three minutes before the train left. 3. I (a letter / a foreign country / never / sent / had / to) before I wrote to him. Lesson 4 4. We (for / walking / had four hours/been) when we finally reached the top of the mountain. 5. I didn't (gone /home/she/know / had / that). I thought she was still here. 6. (will / my little brother/ have / asleep / fallen) by the time I get home. ]に与えられた語を適切な形に変えて英文を完成させましょう。 1. When the guest came, she cooking. [just / finish] 2. I plan to go to the museum every month. By the end of the year, I there more than ten times. [be] 3. They han ten eqx each other for five years when they got married. [know]

商人を怖がらせたのは誰かを教えてほしいです。 お願いします。

① 次の本文に関する質問に、英語で答えましょう。 1 なぜ紀伊国坂は日没後、人が寄り付きませんでしたか。 (Why was Kiinokunizaka very lonesome after sunset ?) Because a mujina used to walk there. 2 商人は堀のそばで誰を見ましたか。 (Who did the merchant see by the moat ?) He saw a woman crouching by the moat. 3 なぜ商人は叫んで、 女性から逃げましたか。 4 (Why did the merchant scream and run away from the woman ? ) The merchant found that she had noeyes, nose,or mouth. 商人は紀伊国坂を駆け上がった時に何を見ましたか。 (What did the merchant see when he was running up Kiinokunizaka ?) Itlooked like the faint light of a firefly. It turned out to be the lantern of a soba-selling stand. 5 追いはぎが商人を怖がらせましたか。 (Did robbers scare the merchant ?) 6 そば屋の店主の顔はどのようになりましたか。 (What did the soba-seller's face become like ? ) his face became like an egg

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Grammar Yourself! bog法に強くなろう! A. 例にならい枠の中から適切な単語を選び、 必要な場合は適切な形にして次の1~4の文を完成 させましょう。 例 It's Takashi's birthday tomorrow. He'll (b)20. 1. "Are you coming with me?" "No, I'll ( ) here." 2. Don't worry about the test. You'll ( ) an A. ) you about the program in detail. be√ come get stay 3. Beth is going to ( 4. Let's wait here until everyone ( ) back from the campus tour. B. 例にならい、カッコ内から正しい語句を選び○で囲みましょう。 tell 15 Hurry! It's already nine o'clock. ( We won't/We're going to be late. 1. "Are you ready?" "Not yet, but (I'll / I won't) be ready in 10 minutes. 2. "Is Yoona coming to the party?" "I don't know. (I'll / I'm going to ) ask her." ar, 3. I'm worried about the test. If I don't get over 60 percent, I won't / will) pass. ) 4. "How about going out for dinner?" "Sorry. (I'll / I'm going to go to a concert から tonight." angled tar You C. 日本語の意味に合うようにカッコ内の語句を並べ替え、 英文を完成させましょう。 ただし、文 の始めにくる単語も小文字にしてあり、 1つ余分な語句が含まれています。 you talk. D 1. キャンパスツアーの後は何をする予定ですか? ( are / will / what / to do / we / going) after the campus tour? 2. キャンパスツアーの後で歓迎会を行います。 Portom tort (welcome we're / we'll / a / party / having ) after the campus tour. 3.10分を超える遅刻は欠席と見なします。 If you're more than 10 minutes late, ( consider / won't / absence / an / it / I'll ). Kaat's Read Aloud & Welte 4. 後でキャンパスを案内します。 (you / I'll / I'm going / the campus / around/show) later. 5 単語 も実際 に使わ 35

なぜここはtouching なのか教えてください🙇

21:17 6月5日 (水) CINDERELLA 26% 4 E< When all these things had been done, the kind godmother touching her with her wand, changed her wo... peeped into the mouse-trap, where she found six mice. She tapped them lightly with her wand, and each mouse became a fine horse. The rat-trap contained two large rats; one of these she turned into a coachman, and the other into a postilion. The old lady then told Cinderella to go into the garden and seek for half-a-dozen lizards. These she changed into six footmen, dressed in the gayest livery. When all these things had been done, the kind godmother touching her with her wand, changed her worn-out clothes into a beautiful ball-dress embroidered with pearls and silver. She then gave her a pair of glass slippers, that is, they were woven of the most delicate spun-glass, fine as すべてが終わると、 親切なゴッドマザーが杖で娘に触れ、ボロボロの服を真珠と銀 で刺繍された美しい舞踏会のドレスに着替えた。