时间:2019-01-04 作者:英语课 分类:英文语法词汇


英语课

 引导名词性从句的连接词可分为三类:
   连接词:that,whether,if 不充当从句的任何成分)
   连接代词:what, whatever, who, whoever 1, whom,
        whose, which.
   连接副词:when, where, how, why
   不可省略的连词:
    1. 介词后的连词
    2. 引导主语从句和同位语从句的连词不可省略。
     That she was chosen made us very happy.
     We heard the news that our team had won.
 比较:whether与if 均为"是否"的意思。 但在下列情况下,whether 不能被if 取代:
1. whether引导主语从句并在句首
2. 引导表语从句
3. whether从句作介词宾语
4. 从句后有"or not"
   Whether he will come is not clear.


  大部分连接词引导的主语从句都可以置于句末,用 it充当形式主语。
  It is not important who will go.
  It is still unknown 2 which team will win the match.

pron.无论谁,不管谁;任何人
  • I'll find the person who did this,whoever he is.我要找出干这件事的人,不管他是谁。
  • Whoever does best will get the prize.谁做得最出色谁就得奖。
adj.未知的,陌生的;n.未知的东西,未知数
  • People usually infer an unknown fact from a known fact.人们通常从已知的事实中推断未知的事实。
  • The scientist was faced with many unknown factors.那个科学家面临许多未知数。