| I | demand |
|---|---|
| you | demand |
| he/she/it | demands |
| we | demand |
| you | demand |
| they | demand |
| I | demanded |
|---|---|
| you | demanded |
| he/she/it | demanded |
| we | demanded |
| you | demanded |
| they | demanded |
| I | have | demanded |
|---|---|---|
| you | have | demanded |
| he/she/it | has | demanded |
| we | have | demanded |
| you | have | demanded |
| they | have | demanded |
| I | had | demanded |
|---|---|---|
| you | had | demanded |
| he/she/it | had | demanded |
| we | had | demanded |
| you | had | demanded |
| they | had | demanded |
单语范例（未经PONS编辑处理）
The demand for labor services is a derived demand, derived from the supply and demand for the firm's products in the goods market.
en.wikipedia.org Once a part is overhauled its value is determined from the supply and demand of the aerospace market.
en.wikipedia.org During the planning procedure, not only do the prices reflect proposed supply and demand, but also the social and ecological cost of producing the good.
en.wikipedia.org The other way stocks are valued is based on supply and demand.
en.wikipedia.org Supply and demand in stock markets are driven by various factors that, as in all free markets, affect the price of stocks (see stock valuation).
en.wikipedia.org