知识能力聚焦讲解10_高中英语

    16. similar adj.类似的,相似的,同样的
    be similar to与……相似,与……类似
    all big cities are quite similar.所有的大城市都大同小异
    her experiences were similar to mine.她的经历和我的类似
    【辫析】similar,like,alike
    similar:指有明显的共同性质,但不完全一致
    like作形容词或介词,指事物在外倪、性质或特征上非常相似以致于区别不开,在句中既可作表语,也可作定语此外,like可用作介词,alike可用作副词
    alike与like同义,作形容词时,只用作表语
    a similar mistake occur; at the end of the paragraph.这一段末尾有一个性质类似的错误
    like thinking produces like ideas.相似的思维产生相似的思想
    like father,like son.有其父必有其子
    the two buildings are very like.这两座楼很相似
    he is a hit like his father.他有点像他爸爸。
    a good teacher treats all his students alike.好对待一视同仁
    he and his brother arevery much alike.他们兄弟俩太相似了.
    17. used     adj.用过了的,二手的;习惯于……的.
    v. 过去常常,过去习惯于
    the astronauts soon got used to the condition of weightlessness.宇航员很快就习惯了失重状态。
    [辫析]used to,he used to
    「注意」强调界限性的状态,说明从不习惯到习惯时,常在used前面用get .或become代替b。这种现象尤其常见于将来时态和完成时态中
    we used to work in山e same workshop.我们曾在同一个车间工作
    there used to he many people smoking in the office,but now nobodv is allowed to.
    过去在办公室里常常有许多人抽烟,现在不让人抽了
    she isn't used to living in the county.她不习惯住在乡下
    we've been used to hard work.我们已经习惯干重活了
    you will soon get used to the  weather here.你很快会习惯这里的天气的
    it's getting darker and darker outside.外面的天色越来越暗
    18.辨析:but, however
    but      conj.可是,然而,但是,尽管……还是用来连接两个并列成分/分句.
    however  adv. 无沦如何,不论到什么程度,不过,然而.不能连接分句,必须用逗号分开,可以在句首,也可插在句中
    not one,but two!不是一,而是二!
    he is young but very experienced.他虽然年轻,但是经验很丰富。
    he has three daughters but no sons.他有三个女儿可是没有儿子
    however did you get there?你是怎么到那里去的?
    he hasn't arrived. he may,however,come later.他还未到,不过,他可能晚一会儿来
    i'd like to go with you,however my hands are full.我很想和你一块儿去,可是我忙不过来
    19. although developed countries give some financial help,they need to give much more.
    虽然发达国家提供了一些经济援助,但是提供援助的数量应该大大增加。
    need      v.需要,aux v.必须  n. 缺乏;缺少;需要;责任;义务;必需品;贫穷;困难
    the hungry children were in need of food. 这些饥俄的孩子需要食物。
    【用法】( 1) need用作情态动词时,只能用于疑问句、否定句和条件状语从句中;在肯定句中need只能用作实义动词,后面需要接带to的不定式
    (2)need作情态动词用于疑问句时,如果作肯定的回答应该用must,
    (3)在否定句中,可以用"need的否定形式+动词的完成式"表示过去时间,这里"needn't have+过去分词"表示做了不必要做的事
    (4) need表示"需要"时,是实义动词,后面常接动名词作宾语,用主动形式表示被动意义,也可以用不定式替换动名词的主动式。
    (5)情态动词need没有过去式,因此一般不表示过去时间。但在宾语从句中没有这种限制