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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 (责任编辑：admin) |