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英語 中学生

答えはhad a *Christmas party.です。 私はdid a *Christmas party.だと思いました。なんでhadなのですか?🙇

5 次の英文は, 美登里 (Midori) , 友達の恵子 (Keiko) とメアリー (Mary) について, 国際交 流の会でスピーチしたときのものです。 これを読んで、あとの(1)から(4)までの問いに答えなさい。 Hi, everyone. I'm Midori. I have two good friends, Keiko and Mary. Mary is from America, and her brother is a famous singer. We love music and sometimes enjoy (ア) music together at my house. We usually use my room. My room is *not so large, but it has a piano. Keiko can sing well. And Mary can play the guitar very well. (guitar she / brings / always / her) to my house. I play the piano, and Keiko sings *to our piano and guitar. I want to play the piano *better. Mary can't speak Japanese well, so we sometimes talk in English. But Keiko and I can't speak English very well. Music is the best "language" *for us. In December, we (イ) a*Christmas party. It was a lot of fun. (注) not so large あまり広くない to 〜 〜に合わせてbetter もっとじょうずに for 〜にとって Christmas クリスマス mt (1) 本文中の(ア), (イ)にあてはまる語を下から選んで,適当な形に変えて書きなさい。 【do, have, take, play, see 】 (2) 下線①のついた文が意味の通る英文になるように, )内の語を並べかえなさい。 ただし, 文頭にくる語は大文字で始めなさい。 (3) 下線 ② のついた英文を次のように書きかえるとき,それぞれの ( Sylloe ウ Midori has a piano in her room. エ Midori, Keiko, and Mary usually talk in English. )に入る最も適当な英語 を1話ずつ書きなさい。 Keiko and I are not (a)(yan) speaking English. (4) 次のアからエまでの文の中から, その内容が本文に書かれていることと一致しないものを一つ選 んで, そのかな符号を書きなさい。 具 ア Midori, Keiko, and Mary are good friends. ① Mary's brother sings well, and many people know him.

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英語 高校生

下から5行目のit would~の文構造がわからないです。back upはどのような働きをしているのでしょうか。 教えて頂けるとありがたいです。

A Makeover for Hoover Dam Hydropower has attracted increasing attention in recent years as a renewable type of clean energy. As long as a suitable water source is available, hydropower facilities are usually good investments, producing energy in a manner that generates far less air pollution and CO2 emissions than fossil fuels do. The most common way to generate hydropower is to trap water at a high elevation behind a dam so it can be released and used to spin turbines below, which, in turn, power electricity-producing generators. However, hydropower has its drawbacks. Droughts and increased water consumption have reduced the flow of many rivers. As rivers become shallower, the necessary volume of water for electricity difficult to maintain, and power supply and generation is dependability are negatively impacted. more Variability in water levels has particularly affected Hoover Dam, a mega-scale hydropower facility in the US state of Nevada. Built in the 1930s at enormous expense to control the frequently flooding Colorado River and maintain a water supply for farmland irrigation, the dam's hydropower capabilities were seen as a way to recover some of the costs of its construction over the long term. The dam's electricity-generating capacity, however, was challenged from the start by seasonal variability in water flow, and in recent years has been greatly reduced by droughts. Combining hydropower with other alternative energy sources, though, may offer a solution. Solar and wind plants can produce enormous amounts of electricity, but one serious downside is that the energy they produce is not available when there is little sun or wind. While conventional batteries can help with this issue, storing such tremendous volumes of electricity has long been a challenge. A recently proposed system for Hoover Dam could provide an answer, though. The plan suggests building a new pumping station that would be powered by both wind and solar. It would push water from the river back up to Hoover Dam, refilling the lake behind it. The water could be released anytime to power the dam's generators in order to reliably meet demand for electricity. Kelly Sanders, an engineering professor at the University of Southern California, is enthusiastic about the storage plan, saying, "We by the p replace fo solat als are st ons to the What is 1 Inst inves 2 WE dams 3 A neg sys 1 en

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