I. roof [ruːf] 名词
| I | roof |
|---|---|
| you | roof |
| he/she/it | roofs |
| we | roof |
| you | roof |
| they | roof |
| I | roofed |
|---|---|
| you | roofed |
| he/she/it | roofed |
| we | roofed |
| you | roofed |
| they | roofed |
| I | have | roofed |
|---|---|---|
| you | have | roofed |
| he/she/it | has | roofed |
| we | have | roofed |
| you | have | roofed |
| they | have | roofed |
| I | had | roofed |
|---|---|---|
| you | had | roofed |
| he/she/it | had | roofed |
| we | had | roofed |
| you | had | roofed |
| they | had | roofed |
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单语范例（未经PONS编辑处理）
For many years imported roofing was in very short supply.
en.wikipedia.org The roof is dirt-insulated and covered with galvanized metal roofing.
en.wikipedia.org Two full-time agricultural operations and seven roofing businesses, some specializing in slate roofing, are a far cry from the way things once were.
en.wikipedia.org The roof is gable with green metal roofing.
en.wikipedia.org Women and children gathered tundra moss for crevices, and prepared skins for roofing and siding.
en.wikipedia.org