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关于英语单词 be 的相关意思和用法?

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/07/05 22:03:40
关于英语单词 be 的相关意思和用法?
1) be +现在分词,构成进行时态,例如:
  They are having a meeting. 他们正在开会.
  English is becoming more and more important.英语现在越来越重要.
  2) be + 过去分词,构成被动语态,例如:
  The window was broken by Tom.. 窗户是汤姆打碎的.
  English is taught throughout the world. 世界各地都教英语.
  3) be + 动词不定式,可表示下列内容:
  a.表示最近、未来的计划或安排,例如:
  He is to go to New York next week.. 他下周要去纽约.
  We are to teach the freshpersons. 我们要教新生.
  说明:这种用法也可以说成是一种将来时态表达法.
  b.表示命令,例如:
  You are to explain this. 对此你要做出解释.
  He is to come to the office this afternoon. 要他今天下午来办公室.
  c. 征求意见,例如:
  How am I to answer him? 我该怎样答复他?
  Who is to go there? 谁该去那儿呢?
  d.表示相约、商定,例如:
  We are to meet at the school gate at seven tomorrow morning. 我们明天早晨7点在校门口集合.