A-A+
He _______ in Japan as he left by boat last mo
问题详情
He _______ in Japan as he left by boat last month.
A．ought to arrive
B．ought to have arrived
C．should arrive
D．must arrive请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：oughttodosth．和shoulddosth．意为“应该做某事”，多用来提出劝告，如：Youshould(oughtto)goandseeMarysometime．你应该抽时间去看看玛丽。mustdosth．用来发出有力的劝告或命令。如：Youmustbeherebefore8o'clockatthelatest．最晚你必须八点以前到这里。根据结构，A，C和D均不合适。oughttohavedonesth．意为“本应该做完某事”，用来谈论过去。所
