词汇网络: been
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相关词 (6)
am
First person singular present tense of 'be'.
A1is
Third person singular present of 'be'. To exist or describe a state.
A1was
First and third person singular past of 'be'.
A1were
Second person singular past and all plural past of 'be'.
A1are
Second person singular and plural present form of 'be'.
A2be
To exist; to happen; to continue in a particular state.
A2