请问一句英语 关于yet和stillThey have been planning to attend the show,but they
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“yet”用于否定句.放在句末
如：I have not finished reading the book yet.
“still”既可用于肯定句又可用于否定句,表示动作或状态的持续.
如：1) She still likes him.
2) I still can not understand you.
注意：“still”置于动词前后,会使句意发生变化.
如：1) He is still standing.(continue to stand)
2) He is standing still.(=standing motionless)
======以下答案可供参考======
供参考答案1:
yet还可以用于疑问句 否定 反问形式 still一般用于肯定句，除了仍然，还有竟然的强调意
供参考答案2:
因为yet用于否定句的句尾．如：I haven't have my supper yet.
still 用于句中．