懂英语的进!thatage前不能加at?(见下面详细提问)我只见过atthattime,attheageof,例：Lessthanonepercentofpeoplesufferheartdiseases.A.thatageB.withthatageC.onthatageD.atthatage我选了D,它说thatage

Question

懂英语的进!that age 前不能加at?(见下面详细提问)
我只见过at that time ,at the age of ,
例：Less than one percent of people _____suffer heart diseases.
A.that age B.with that age C.on that age D.at that age
我选了D,它说that age “那年龄段”前不加介词,为什么?
那people that age 算是个名词性词组吗?

Answer 1

以this,that ,these ,those,every构成的时间名词前不加介词,除at this time ,on that day