http://www.pons.de/produkte/3-12-517841-X/(牛津大学出版社授权产品)
在《PONS词典》中的词汇
I. roof [ru:f] 名词
II. roof [ru:f] 动词 trans -s
- roof
-
I. roof <-s> [ruf] 名词
II. roof <-s> [ruf] 动词 trans
- roof
-
| 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 |