Definition: a part added to the end of a word Level: B1
要将“dog”变成复数，你添加复数词尾“-s”。
To make the plural of "dog," you add the plural ___ending "-s."
后缀“-ed”是过去式动词的常见词尾。
The suffix '-ed' is a common ___ending for past tense verbs.
单词“happiness”有词尾“-ness”，表示一种状态。
The word 'happiness' has the ___ending '-ness' which indicates a state.
