SICP学习与感想

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神课的学习与感想~

课上把编程语句分为两种陈述句和祈使句。DECLARATIVE VS IMPERATIVE

重点在于 IMPERATIVE 怎么理解？

释义：used to describe the form of a verb that is usually used for giving orders:

  • imperative form In the phrase “Leave him alone!”, the verb “leave” is in the imperative form.

语法中四大基础句式（顺便回顾下，加强联系）：

  • 陈述句：Declarative clauses most commonly function as statements. The usual word order is subject (s) + verb (v) + x. Declaratives can be affirmative or negative. They make statements about how things are and how they are not.
  • 祈使句：Imperative clauses most commonly function as commands, instructions or orders. The usual word order is verb + x. We do not usually include the subject in an imperative clause. We use the base form of the verb
  • 疑问句：Interrogative clauses most commonly function as questions. The usual word order is (wh-word) + auxiliary/modal verb (aux/m) + subject + verb + x
  • 感叹句：Exclamative clauses usually have one of the following word orders:
    • What + noun + subject + verb
    • How + adjective or adverb + subject + verb
    • Auxiliary or modal verb + subject + verb (i.e. interrogative word order)