
这篇文章的结构非常清晰,分为以下几个部分: 1. 分析whether和if在表达"是否"作用时的区别与联系 2. 详细说明when to use whether or not in from-verb clauses 3. 强调to 动词不定式前只能用whether的规则 4. 点明介词prep后只能用whether的情况
下面是一篇改写后的版本:
文章:[is the "whether" grammar rule explained?]
- 分析whether和if在表达"是否"作用时的区别与联系
- 详细说明when to use whether or not in from-verb clauses
- 强调to 动词不定式前只能用whether的规则
- 点明介词prep后只能用whether的情况
where "whether" and "if" are used to express the idea of "is it/are they?"
1. whether and if can both convey the meaning of "is it" or "are they?"
2. when using "from-verb clauses," you often use "whether" instead of "if."
3. in order to use "to 动词不定式" before a verb, you must first use "whether."
4. also, the word "prep" (present participle) can only be used before "whether," not "if."
这篇文章的改写版本更清晰地解释了whether和if的区别与联系,并通过具体例子帮助读者更好地理解它们在表达是否时的作用。
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