他向老板解释项目进度落后了。
He explained to his boss that the project was behind schedule.
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explained英 /ɪkˈspleɪnd/|美 /ɪkˈspleɪnd/
to英 /tuː/|美 /tu/|英 /tə/|美 /tə/
that英 /ðæt/|美 /ðæt/
解释
报告动词 explained + 介词短语 to his boss + that 从句作直接宾语，用于正式场合的解释传达。
He explained to his boss that the project was behind schedule.
报告动词 explained + 介词短语 to his boss + that 从句作直接宾语，用于正式场合的解释传达。