1.While we were setting out on a journey,it started to rain.
2. Are you in Paris on business or for pleasure?
3. Do you want to go out for a walk?
4. Susan has been on vacation in Thailand for a month.
1 这一类介词短语中, for a walk,for pleasure 是状语表目的吗? 而 on a journey, on business , on vacation 是表语表状态,相当于一个形容词?
2 这类短语,有时候需要冠词,有时候又不需要,这有什么原因吗,固定搭配?
1.While we were setting out on a journey,it started to rain.
介词短语作目的状语。
2. Are you in Paris on business or for pleasure?
介词短语作目的状语。
3. Do you want to go out for a walk?
不定式短语to go out for a walk作目的状语,for a walk为不定式的目的状语,不是句子层次的成分。所以分析句子成分的时候不分析for a walk, 而是不定式短语作目的状语。
4. Susan has been on vacation in Thailand for a month.
介词短语作表语。
至于介词后的名词有的有冠词,有的没有冠词,是因为有的名词为可数单数名词,有的是不可数名词。这需要你多观察、留心。词典也会帮助你。多注意词典例句。
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