重点内容
1. 系动词be
am, is, are, was, were
2. 状态和状态持续
be, seem, look, appear, etc...
3. 状态转变
become, go, get, turn, etc...
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重点内容
1. 系动词be
am, is, are, was, were
2. 状态和状态持续
be, seem, look, appear, etc...
3. 状态转变
become, go, get, turn, etc...