Unit_7_Will_people_have_robots?知识点讲解与练习 (1)
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Unit 7 Will people have robots?
知识点讲解与练习
一、单词与短语
alone adj. &adv. 与 lonely
1. =by oneself 独自的/地;孤独的/地; 独立的/地
eg, He likes living alone.
I mended the bike alone.
2. and no other 只有。唯有 (跟在名词或代词后面)
eg, Mr Smith alone knows what happened.
You alone can help me in the work.
注意:alone 强调客观上"独自,单独一人"。
lonely adv.
1. 作表语。其意思为 "孤单"
eg, He feels lonely. (作表语)
2. 作定语,修饰表示处所的名词。
eg, The old man lives in a lonely mountain village.
注意: alone 强调客观上的 "独自。单独一人", 而lonely除表示
"单独"外,还带有感情色彩,形容失去朋友,缺乏友爱和帮助,感到寂寞、甚至悲哀,它只能做形容词,在句中做表语,也可做前置定语,用于地点时,意为 "荒凉的,偏僻的"
eg, Though the old man is alone, he doesn't feel lonely
二、probably adv. 很可能,或许,大概
eg, Probably he may know the way. (放句首)
He is probably about 50 years old. (放在系动词后面)
I probably didn't try hard enough. (放在谓语前面)
It'll probably rain. (放在助动词后面)
able adj. 1. 有能力的,能干的
eg, My father is an able engineer.
2. 用于be able to 结构,后跟动词原形。
eg, Jim isn't able to come tonight because he is ill.
三、be able to 与can :相同 点:两者后跟原形动词。
区别:
1. can是情态动词,无人称与数的变化。过去式是could.
be able to 可与情态动词连用,can却不能。
eg, I shall be able to speak English well.
2. be able to 可用在不定式之后,而can却不能。
eg, I hope to be able to go shopping with you on Sunday.
3. be able to 的过去式还有表示过去经过努力而做到的意思,而could
没有这种意思。
eg, He studied hard and was able to pass the exam.
4. can 表示请求和允许,以及猜测,而be able to 却无此用法。 eg, Mr Smith can't be at home. Can I carry your bag?
5. 当表示现在或过去的"能力"时,两者可通用。eg, No one was able
to/could answer the question.
2、in 与 after的区别 in是指以现在时间为起点的“在一段时间以后”。也可以表示“在将来多少时间之内”,句子中的谓语动词要用一般将来时态;after常指以过去时间为起点的“一段时间之后”,所以它与过去时态连用。当after指某个特定的未来时刻或日期之后,或指以将来某一时间为起点的若干时间之后时,它可以与将来时态连用。
例句:I'll be back in half an hour. 我半小时后就回来.
本句中的in作"以后"解,不能用after代替。
after和in都可以表示"以后"的意思,其区别是:
1)after以过去为起点,表示过去一段时间以后,常用于过去时态的句子。例如:
They started working after lunch. 他们是午餐后开始工作的。
The film was shown after the meeting. 电影是会议结束以后放的。
2)in以现在为起点,表示将来一段时间以后,常用于将来时态的句子。如:
They will start working in half an hour. 他们将在半小时后开始工作。
The film will be shown in 2 or 3 days. 这部电影将在两三天后上映。
3)在某个特定的时间以后,after也可用于将来时态的句子。例如:
They will start working after 10 am. 他们将在上午10点以后开始工作。 The film will be shown after 5 o'clock. 这部电影将于4点以后上映。
4) “after+一段时间”或“一段时间+later”表示“(在过去某个时间看来)一段时间之后”。
He went home after two days.
他两天后回家了。
Three years later,she had a baby.
三年后,她生了一个婴儿。
3.fall的短语:n.秋天,秋季
v.掉落,掉下
(1)fall behind:落在······的后面
e.g. Work harder,or you will fall behind others.
(2)fall off:从······上掉下来
e.g. Mary fell off the ladder last night.
(3)fall in love with
(4) fall over 4、every day与everyday区别: every day名词短语,表示“每天”,通常与一般现在时连用;而everyday形容词,表示“日常的,每天发生的,每日所用的”。 例如:
I get up at six every day. 我每天6点起床。 He wears everyday clothes today.今天他穿一身便服。 Wear、put on、have..in的区别 wear表示“穿”,表示状态,用一般现在时表示经常状态,用现在进行时表示暂时状态。 eg.We wear our rain boots on a rainy day. 我们在下雨天穿雨鞋。 She is wearing a new coat. 她穿着一件新衣服。 Does he wear glasses? 她戴眼镜吗? put on是“穿上”,“戴上”的意思,强调动作。 eg.She put on a red coat and went out. 她穿上红色大衣出去了。 注意:put on是一时的动作,不能跟表示一段时间的状语连用。 他整天戴着草帽。 误:He puts on a hat all day. 正:He wears a hat all day 5、. be worth doing值得; be worthy of doing, be worthy to do值得 6、Seem的用法: 1)seem to do似乎…He seems to think so. 2)It seems that看来…It seems that he is lying. 3) seem +adj./n.好象是… He seems ill. 7、would like sth意思为“想要某物“; would like to do意思为 “想要做某事”。回答would like句型的一般疑问句时,其肯定回答为 “Yes, please.”;否定回答“No, thanks”或 “I‟d
like /love to, but….” 8、.make sb. do; make +n+adj.; make friends with sb.; make +n./ pron.+n. 9、. Such作形容词,意思是“如此的”“这样的”,修饰各种名词。 Such这样的。如It is such bad weather.天气如此恶劣。 Such常和as搭配,表示一种类别。如We enjoy such a voice as hers.我们喜欢象她那样的嗓子。 Such常和表示结果的that从句搭配,表示“如此….以至于…”如 It was such a hot day that we all had to stay at home. Such…that…和so…that…都可用来引出一个结果状语从句。由于such是形容词,所以that从句前有一个受such修饰的名词;而so 是副词,用以修饰形容词或副词,因此that从句前一般不出现名词。如 They are such kind-hearted teachers that people in the village all respect them. The exam was so difficult that many students failed to pass it. a) 如果名词是可数名词的单数形式,such和so的位置不同: such+a/an+形容词+单数名词 so+形容词+a/an+单数名词 b) 如果名词是不可数名词或名词复数,只可用such,不能用so.: such+形容词+不可数名词或复数名词 c) 如果被修饰的不可数名词被much, little, 或复数名词被many, few等表示量的形容词修饰时,用so,不用such. d) 当little表示“年纪小的”时,可用such+little+名词 There were such little children that they couldn‟t clean the room. 10、 people, person, folks, human: people“人们“全体;person “人”(不分年龄,性别它包括men, women, children.它可做people的单数形式可以说every person但不能说one people. Person指“人们”时着重个体;folks“人们”,指一般人或特殊年龄位置,境遇等特殊级的人;human主要用来区别于其他动物。