2 I/we must可用 had to转述
如已决定需要在某一时间完成某一动作,或已订好某一计划,或所承担的某种义务可以较快地履行完毕,或至少在转述为间接引语时已经完成了,则常用 had to表示某一必需去做的事:
He said,I must wash my hands.
他说:我得洗洗手。(他很可能后来马上去洗手了。)相当于:
He said that he had to wash his hands.
他说他得去洗洗手。
Tom said,I must be there by nine tomorrow.
汤姆说:我明天9点以前必须在那里。相当于:
Tom said that he had to be there by nine the next day.
汤姆说第二天9点以前他必须在那里。
在这里也可以用would have to,但这样就暗示必须做的事是
自己要求自己做的,而不牵涉任何外在的权威。而 had to既可以表示一种外在的权威(即有人叫他到那儿去),也可以表示自己要求自己做的一种事。
当然,如果 must保持不变,则一切有关用 had to或would have to的困难都可以避免。在上面两个例子中都可以用must代替 had to或 would have to。
3 含有 you/he/they must的句子,也用同样方法转述:
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