把下列单词变成复数wife –half - shelf -thief -roof - gulf -chief

问题描述:

把下列单词变成复数wife –half - shelf -thief -roof - gulf -chief

wives
halves
shelves
thieves
roofs
gulves
chiefs
以f或fe结尾的名词,多数变f为v加es: wives, knives.但有些词只加s: roofs, proof s, chiefs.
读音变化:尾音[f]改读[vz]
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