形容詞從句位置的知識點
在《容易犯錯的形容詞從句》一文裏,知道形容詞從句總是跟在被修飾的名詞(即先行詞)後面。例如:
① Any change which causes the formation of new matters is a chemical change.(在主句主語的名詞之後)
② Plastics is an important material which is widely used in industry.(在主句補足語名詞之後)
③ It has certain features that are easily recognised.(在主句賓語名詞之後)
在下列情況下,形容詞從句和所修飾的'名詞隔開:
㈠被介詞短語隔開,如:
④ Magnets work through lines of force that extend between the two ends of the magnet.
⑤ A molecule may be defined as the smallest particle of matter that can exist without changing its nature.
④裏的形容詞從句和先行詞lines被介詞短語of force 分離。⑤裏的卻被另一個介詞短語of matter隔開。
㈡被分詞短語隔開,如:
⑥ There is no method known to medical science today that can effectively cure cancer.
⑥裏的形容詞從句和先行詞method之間被過去分詞短語 known to medical science today隔開。
上述兩種隔離情況可以理解,也被接受。
另外還有一種分隔情況,也偶爾見到,特別在科技英語中,但這種離異法,值得商榷。