几道高一英语词形变化题,
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几道高一英语词形变化题,
1.The experience we gained in this area ( ) very helpful for our research.
括号内词语用 prove 变形,还有原因
2.Mother doesn't let him go out alone unless he ( ) to come back before dark.
括号内填promise变形,是写promised么?
1.The experience we gained in this area ( ) very helpful for our research.
括号内词语用 prove 变形,还有原因
2.Mother doesn't let him go out alone unless he ( ) to come back before dark.
括号内填promise变形,是写promised么?
![几道高一英语词形变化题,](/uploads/image/z/4775293-37-3.jpg?t=%E5%87%A0%E9%81%93%E9%AB%98%E4%B8%80%E8%8B%B1%E8%AF%AD%E8%AF%8D%E5%BD%A2%E5%8F%98%E5%8C%96%E9%A2%98%2C)
1. proved
prove更多时候做系动词,意思是“证明是”,不用于被动语态.
因为前句有gained,所以也使用其过去式proved.
2. promises
主从句时态一致,所以也用一般现在时.
主语he为第三人称单数,所以用单数形式promises.
prove更多时候做系动词,意思是“证明是”,不用于被动语态.
因为前句有gained,所以也使用其过去式proved.
2. promises
主从句时态一致,所以也用一般现在时.
主语he为第三人称单数,所以用单数形式promises.