FORM/USE: NON-FINITE WITH '-ING'
EGP #247 | B1 | CLAUSES / subordinated Can use a non-finite subordinate clause with 'before' and 'after' + '-ing', before or after a main clause, to refer to time. Lexical range: N/A
出门前，他检查了所有的煤气和灯是否都关了。
___Before ___leaving the house, he checked that the gas and all the lights were off.
请在进入考场前关闭手机。
Please turn off your phone ___before ___entering the exam room.
完成作业后，她看了一集最喜欢的剧。
___After ___finishing her homework, she watched an episode of her favourite show.
他们一起吃过午饭后去了公园。
They went to the park ___after ___eating lunch together.
做任何决定之前，你应该仔细考虑所有选项。
You should consider all the options carefully ___before ___making any decision.