中考英语词汇语法专项精练答案|2017中考英语词汇专项练习：一词多义(19)

please
　　表示"请",多用于祈使句中,表示客气与礼貌,后接动词原形.
　　Pleasecome in.
　　Come in,please.
　　Please go to school tomorrow.
　　Go to school tomorrow, please.
　　祈使句是表示命令,请求的句子.省略了主语you, 以动词原形开头.其否定形式是在动词原形前面加Don't.以please开头的祈使句,其否定形式为 Please don't + 动词原形.
　　Please stand up.
　　Please don't stand up.
　　Sit down.
　　Don't sit down.
　　You can watch TV at home.(改为祈使句)
　　______ _______ at home.
　　sleep
　　作动词,意为"睡,睡觉".也可作名词,意为"睡觉,睡眠".构成以下词组:
　　go to sleep
　　get to sleep
　　Please be quiet! Your father is sleeping.
　　Let's have a sleep now.
　　asleep是形容词,意为"熟睡的".多用在系动词后作表语.
　　sleepy 是形容词,意为"有睡意的,困倦的".
　　My father is asleep now.
　　I'm sleepy when I listen to him.
　　go to bed和sleep
　　(1)go to bed 指"上床睡觉",强调从脱衣服到上床这一动作,表示准备睡觉,不含睡着之意.
　　(2)sleep指睡着的整个过程,用于现在进行时态中表示"正在睡觉".
　　I sleep for nine hours every day.
　　Don't make noise. Your father is sleeping.
　　Look! The baby is ____ in bed.
　　A sleep B asleep C go to bed D go to sleep
　　during/for
　　(1)during意为"在…期间,在…时候".多指一段时间中的某一时候或某几个时候.强调某事什么时候发生,不一定很精确.其同义词为in
　　(2)for强调多长时间,可能较准确.用来指事件持续时间.
　　It rained during the day.
　　He worked during the night.
　　My father slept for 10 hours yesterday.
　　-How long did you stay there?
　　-For two hours.
　　He studied very hard. He did his homework ___ the day.
　　A for B during C of D at

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