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初一教案 第739期(2) 发布时间:2021-05-24 点这里下载本页内容 (26.5 KB) 第41/ 739期初一教案 姜 磊 Wave of bugs is coming (p6) While reading Can you imagine waking up one day after sleeping for 17 years? That’s what 30 billion of cicadas (蝉) will do this summer in many parts of the US.
imagine v. /ɪˈmædʒɪn/ 想象;设想 imagine sth/ doing sth/ that imagination n.想象力 e.g. Use your imagination! I don't imagine (that) they'll refuse. 我认为他们不会拒绝. billion num. /ˈbɪljən/ 十亿 billions of 数以十亿记的 数字+billion of 3 billion of 30亿的.... million 百万 one in million 凤毛麟角 thousand千 hundred 百 one in hundred 百里挑一
Cicadas are common insects (昆虫). They spend most of the year hiding underground. spend v./spend/ 花费 spend time (in) doing sth spend money on (doing) sth She spent $100 _____ a new dress.
Cicadas are common insects (昆虫). They spend most of the year hiding underground. “花费”大杂烩 pay 付钱,主语为人,用于pay money for sth spend 支付,主语为人,用于spend money on sth cost 花费,主语为物,sth costs sb some money take 花费(时间),主语为it,it takes sb time to do
...But there are other cicadas who stay hidden for longer. stay v. /steɪ/ vi. 停留;坚持;暂住;停下 stay hidden 藏起来 e.g. I can stay hidden in the crowd (人群). stay unchanged 保持不变 stay unfinished 仍旧未完成 stay healthy 保持健康 stay green 持绿性 e.g. The leaves might stay green during winter.
They’re one of the longest-living insects. How to translate this sentence? 他们是生存时间最长的昆虫之一。 longest-living adj.生存最长久的 复合形容词:a.单词之间要有连字符; b. 复合形容词中的名词用原形; c. 复合形容词一般用作前置定语 如 two-hour (两小时的);three-year-old (三岁的); two-faced (两面的); part-time(业余的);
They’ll come out when the temperature outside reaches 17.7 C. When they come out, some people’s backyards will look like the ocean, moving up and down with “waves” of bugs.
come out 出来 出现 发表 开花
reach v./riːtʃ/达到;延伸;伸出手;传开 reach for伸手去拿 reach out 伸出 within easy reach of 再容易达到...的地方
They’ll come out when the temperature outside reaches 17.7 C. When they come out, some people’s backyards will look like the ocean, moving up and down with “waves” of bugs.
move up and down 扑腾,跳动 day and night =days and nights 昼夜,终日终夜 day in and day out 天天 ups and downs 挫折,起伏
wave v./weɪv/ 挥手;挥手示意;挥舞 n. 海浪,海潮;涌现的人或物 waves of 一波又一波的 wave goodbye to sb 向某人挥手再见 wave down 示意停下
The underlined sentence tells us that there will be a ________ number of cicadas when the weather gets warm.
After they come out, they will lose their exoskeletons (外骨骼). The exoskeletons will break up and go into the dirt. They will help plants grow.
What does break up mean here?
break up 打碎,破碎;结束;解散,分手;衰落 break down破坏, 毁掉; 破除; break into破门而入 break the law/rule违反法律/规章制度 break one’s heart使某人心碎
But cicadas aren’t dangerous to us. They can’t hurt humans. After they come out, they will lose their exoskeletons (外骨骼). The exoskeletons will break up and go into the dirt. They will help plants grow.
Are periodical cicadas harmful to us? What benefit do they bring?
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