外研版九年級英語下冊《You must be careful of falling stones》Rules and suggestions PPT課件(第2課時)，共20頁。
get lost意為“迷路”，其同義短語為lose one's way。
eg：It's very easy to get lost in the forest.在森林里很容易迷路。
You mustn't go off on your own.你們不許獨自離開。
①go off在此處意為“離開”。
eg：She went off to get a drink.她離開去拿飲料了。
【拓展】go off還意為“爆炸；響起；熄滅；變質(zhì)；變壞”。
eg：I woke up when my alarm clock went off.鬧鐘一響我就醒了。
Milk goes off quickly in hot weather.牛奶在熱天很快就會變壞。
②on your own意為“獨自；單獨”；相當于all by yourself或alone。
on one's own意為“獨自地；獨立地”，其中one's要隨主語的人稱變化而變化。
I'll lead the way.我來帶路。
lead the way意為“帶路”。
eg：I don't know the way to the library.Who will lead the way？我不知道去圖書館的路，誰來帶路？
【拓展】lead用作及物動詞時，有如下含義：
①引導(dǎo)；領(lǐng)(路)
eg：She led me into the living room.她帶我進入客廳。
②領(lǐng)導(dǎo)；指揮；率領(lǐng)
eg：They will let the young man lead the basketball team.他們將會讓這位年輕人領(lǐng)導(dǎo)這個籃球隊。
③過(某種生活)
eg：We lead a very quiet life.我們過著非常安靜的生活。
④造成；導(dǎo)致
eg：What led him to break the rules？是什么導(dǎo)致他違反規(guī)定？
重點詞組歸納
at noon在下午
in one go一口氣；一下子
be careful of小心；注意
begin with以······開始
get up to到達；達到
... ... ...
關(guān)鍵詞：You must be careful of falling stones PPT課件免費下載，.PPT格式；
