高中英语外研版 (2019)必修 第一册Unit 5 Into the wild导学案

The Monarch's Journey

Many animals move from one place to another at certain times of the year. This ①annual movement is called ②migration. They ③migrate ④to find food, ⑤seek a partner, ⑥ in search of warmer weather. One of the most wonderful migrations in nature is ⑦_that_of_the_North_American ⑧monarch_butterfly．

④不定式短语作目的状语。

⑥or 为并列连词，对前后三个动作进行连接。

⑦that指代migration，作表语。

黑脉金斑蝶的旅程

许多动物都会在每一年的特定时间从一处迁移到另一处。这种①________行为叫②________。这些动物为了觅食、⑤ ________配偶或温暖的环境而③________。自然界最为壮观的迁徙之一就是北美洲⑧ ___________的迁徙。

Every autumn, millions of these beautiful insects with fine black and orange wings begin a long and difficult journey. Somehow they manage ⑨to travel around 4，000 kilometres south ⑩ find their way to California ⑪ Mexico. However, ⑫until recently no one knew ⑬how_they_did_this.

⑨不定式短语作宾语。

⑩and为并列连词，对前后两个动作to travel around 4，000 kilometres south和find their way to California or Mexico进行连接。

⑪or为并列连词，对前后两个名词California和Mexico进行连接。

⑫until在此处为介词，后接“某一时刻”，在本句中作时间状语。“not ... until ...”表示“直到……才……”。

⑬how引导宾语从句，作动词knew的宾语。

每年秋天，数百万只这种翅膀是橙黑相间的美丽昆虫都会开启漫长且艰辛的旅程。它们总是能够完成约4，000公里的南行旅程，成功到达(美国)加利福尼亚州或墨西哥。然而，直到最近人们才明白他们是如何做到的。

A team of scientists ⑭led by ⑮Professor Eli Shlizerman at the University of Washington has now found the answer. They have found out ⑯ that_the_monarch_is_able_to_tell_the_time_of_day. It uses its eyes to ⑰measure the ⑱position of the sun. These two pieces of information—the time of day and the point ⑲where_the_sun_is_in_the_sky—allow the butterfly to ⑳determine the way to go. Eventually, it manages to reach the places where_it_will_spend_the_winter.

⑭过去分词短语作后置定语。

⑯that引导宾语从句，作谓语动词have found out的宾语。

⑲where引导定语从句，先行词为the point，在后面的从句中作地点状语。

不定式短语作后置定语。

不定式短语作宾语。

where引导定语从句，先行词为the places，在后面的从句中作地点状语。

一支由伊莱·史莱曼⑮ ________领导的来自华盛顿的科学家团队现已找到了答案。他们发现，黑脉金斑蝶可以判断时间，并能用眼睛⑰ ________太阳的⑱ ________。这两条信息——一天中的时刻和太阳在天空中的位置——让黑脉金斑蝶能够⑳ ________前进方向， ________成功抵达过冬的地点。

The solution to the mystery of the monarch's amazing ability comes at a time when_it_is_in_serious_trouble. Its population has crashed by as much as 90 per cent in the last few years. Sadly, human activity is the main reason why_the_number_of_monarch_butterflies_is_falling. In many of the places where_the_butterfly_can_be_found,_people are destroying the natural environment. They cut down trees  use chemicals  that_kill_the_plants_that_monarch caterpillars_eat.

when引导定语从句，先行词为a time，在后面的从句中作时间状语。

why引导定语从句，先行词为the main reason，在后面的从句中作原因状语。

where引导定语从句，先行词为the places，在后面的从句中作地点状语。

and并列连词，连接前后两个动作cut down trees 和use chemicals。

that引导定语从句，先行词为chemicals，在后面的从句中作主语。

黑脉金斑蝶这一 ________能力的 ________的  ________揭开时，这一生物正处于水深火热的生存状态中。其数量在近几年内 ________了 ________九十多。不幸的是，人类活动是造成其数量下降的主要原因。在黑脉金斑蝶生存的许多地方，人们正在 ________那里的自然环境。他们 ________树木，他们所用 ________杀死了黑脉金斑蝶 ________食用的植物。

The research on the monarch's behaviour has however led to a greater awareness of this creature. People have been working together to record its migration and make sure that_there_are enough_plants_for_it_to_feed_on. If_this_works,_there may come a time when_the_number_of_monarch_butterflies_increases once_again. The_more_we_know_about_this_lovely_creature,

_the_greater_the_chance_it_will survive  keep its place in the natural world for a long time to come.

不定式短语作目的状语。

that引导宾语从句，作动词词组make sure的宾语。

If引导条件状语从句，主句是there may come a time。

when引导定语从句，先行词为a time，在后面的从句中作时间状语。

the more ... the more ... 句式，表示“越……就越……”。

and并列连词，连接前后两个动作survive和keep its place。

不过，对黑脉金斑蝶行为的研究也使得人们对这种________有了更多的了解。人们已经在共同努力，记录它的迁徙，并确保它有足够的食物。如果这些努力产生效果，黑脉金斑蝶的数量在未来有可能再次回升。我们对这种迷人的生物了解越多，它们在自然界中得以长久________并保持其位置的可能性就越大。