by then是什麼意思?

母語人士的回答
Rebecca
By then at that time意思。所以,套用這段視頻中的那句話, he should be finished at that time 。示例: We will be in our new house by then. = We will be living in our new house at that time. (那時你將住在新房子裡。) 示例:那時I will be 25 years old by then. = I am 24 years old now, but I will be 25 years old at that time. (我現在 24 歲,但那時我將 25 歲。)