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whichever让步状语和名词性从句区分

whichever让步状语和名词性从句区分

whichever 引导让步状语时,主句和从句都是独立完整的句子,不缺成分,可以用no matter which替换whichever 引导名词性从句时,如果离开从句,主句就会缺少成分,不是完整的句子, 例如:

Whichever they choose, we must accept their decision.无论他们如何选择,我们都必须接受他们的决定(摘自《牛津词典》)(本句中,whichever引导让步状语从句,主从句都是独立完整的句子,主句主语是they, 谓语是choose,宾语是whichever从句主语是we,谓语是must accept,宾语是their decision),本句也可以表示为:No matter which they choose,we must accept their decision.

Choose whichever brand you prefer.挑选尼喜欢的那个品牌(摘自《牛津词典》)(本句中,whichever引导名词性从句中的宾语从句,离开从句whichever brand you prefer,主句只有choose,缺少成分,不是完整的句子,不能独立成句)