it的用法及常见句型

这是一个关于it的用法及常见句型的思维导图。“it可用作人称代词、指示代词、先行词及引导词等。可代表前文已提到过的一件事物。用作指示代词时，常用来指人。用作虚词时无指代性。”

it的用法及常见句型

• it用作代词
  • 代指时间、距离、自然现象等
  • 代指前面所替到的事情、事物、群体、性别不明（婴儿）或你有必要区分性别的人，也可以代指未指名但谈话双方都明白的事物或事情
  • 代指this或that
• it用作形式主语
  • to do为真正主语
    • it is adj.(for sb.) to do sth.
    • 此处adj.描述to do的内容，如：easy difficult hard necessary possible likely right important illegal well-mannered ill-mannered polite clear obvious certain suitable proper useful
    • it be adj.of sb.to do sth.
      • 此处adj.描述 sb.的性格特征，如：kind rude cruel considerate thoughtful thoughtless careful foolish clever wise crazy
    • 常见句型
      • it's no use /good doing sth.
      • it's (well) worth doing sth.
      • it's (well) worthwhile doing/to do sth.
      • 例句it's no use crying over split milk(覆水难收）
  • 从句为真正主语
    • it is+noun. +clause
      • it is pity/shame that
      • it is no wonder that
    • it is adj.+clause(=it's of noun.)
      • it's important/surprising that
    • it verb sb. +clause =it's v-ing +clause
      • it is surprise/delight/disappoint/disturb/annoy/amaze/bother/concern/frighten/please/anger sb.that
      • it worried me that she drove so fast(= it is worrying that she drove so fast)
    • it verb (to sb.) that…=sb./sth. verb to do
      • it seemed/appeared/occurred to me that…
      • it's (so) happened /chanced that they were out (=They happened/chances to be out)
    • it is v-ed that…=sb./sth. is to do
      • it's sayed/reported/though/believed/hoped/determined that
    • it is v-ed that…(should)…
      • it's demanded/requested/required/ordered/suggested/advised/recommended that…(should)…
• it 做主语
  • it takes sb.…to do…=sb. takes…to do…
  • it's (just) (un)like sb. to do…（不）像某人做某事的风格
  • it is (about/high) time that should/did…是该做某事的时候了
  • it is the x-time (that) sb have done sth.
  • it is/has been…since …continuous v-ed(延续性动词）某动作持续了多久
  • it was(not)…before…过不了多久某事发生
  • it won't be long before sb does sth. it will be…before sb does sth.
• it做形式宾语
  • verb it adj./noun.(for/of) to do/that
  • verb it adj./noun.(one's) doing
  • verb it important/necessary/natural/essential that…(should)…
  • verb it as noun./adj. clause
  • （以上verb=think believe made feel cinsider suppose
  • v. it prep. that
    • owe/leave it to sb. that
    • tkae it fot granted that
    • keep it in mind that
    • see to/ depend on/rely on it that取决于
• it用于强调句
  • itis/was …[强调部分]…that/who… 强调部分可以是主语、宾语及状语
  • 特别注意点
    • not until的强调句型：it is/was not until…that …
    • 特殊疑问句型：who/what/where/when is/was it that?疑问词为被强调部分
• 固定句式及常用搭配
  • it's said/reported/believed …that…
  • it is no use/good doing sth.
  • like/dislike/hate(表示喜好）it when/if…
  • take it that 我的理解是 can′t help it if 如果…（我）也没办法 would appreciate it if 如果…（我）将不胜感激 as someone puts it，…真如某人所说的那样… count/depend on it that… 相信… see to it that 确定/务必… when it comes to(介词)…当谈到/涉及… call it a day 今天就到此为止 that′s it就是这样，够了（表示愤怒）