1．当祈使句表示要求或命令时，变间接引语常采用tell/order/command sb. to do sth.的形式。若祈使句为否定形式，变间接引语时不定式前加not或never。
“Go and wash your face, Tom，” Mother said.
→Mother told Tom to go and wash his face.
母亲叫汤姆去洗脸。
He said to me, “Don't go out.”
→He ordered me not to go out.
他命令我不要出去。
2．当祈使句表示请求时，变间接引语常采用request/beg/ask sb. to do sth.的形式。祈使句中的please在间接引语中必须省去。
“Please don't come late，” he said.
→He asked me not to go late.
他叫我不要去晚了。
“Come here and sit down, please.” he said.
→He asked me to go there and sit down.
他叫我去那儿坐下。
