眼看就要下雨了，他们赶紧跑进屋里。
It was about to rain, so they ran inside.
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was英 /wɒz/|美 /wɑz/
about英 /əˈbaʊt/|美 /əˈbaʊt/
to英 /tuː/|美 /tu/|英 /tə/|美 /tə/
解释
was about to 用于非人称主语 it，表示从过去看自然现象即将发生。about to 后接动词原形 rain，强调雨随时会下起来的紧迫感。
It was about to rain, so they ran inside.
was about to 用于非人称主语 it，表示从过去看自然现象即将发生。about to 后接动词原形 rain，强调雨随时会下起来的紧迫感。