Dids
(did 的復數) do的過去式
??? 情景例句
Thank you.
謝謝你。
We're in competition with several other companies for the contract.
我們與另外幾家公司逐爭取這個合同。
Was the noise a cause of the illness, or were the complaints about noise merely a symptom?
是噪音引起了（精神）病呢，還是（精神）病的癥狀之一是對噪音的抱怨？