耗费 (hàofèi) refers to the resources consumed, not just time; use 耗时 when specifically discussing time duration.

Think of 耗 as '耗尽' (to exhaust) and 时 as '时间' (time). Imagine a clock running out of time while you are working hard on a task, exhausting your time—this visual helps remind you that 耗时 is about the time consumed by an activity.

Be careful not to confuse 耗时 with other time-related words like 花费 (huāfèi, to spend) or 耗费 (hàofèi, to consume), which have slightly different nuances. It is typically used in neutral to formal contexts, such as in business discussions.

While 耗时 is not an HSK level word, it relates to concepts of time management present in HSK levels 4 and above. Focus on using it in sentences that describe the duration of various activities to reinforce its meaning.

In contemporary Chinese workplaces, the efficiency of time management is highly valued, making 耗时 a relevant term in discussions about productivity and project deadlines.

Learners often misuse 耗时 by using it with the wrong subject or verb. For example, saying '这个项目耗时很快' is incorrect; you should say '这个项目耗时很长' (This project takes a long time).