The sperm whale is about 30 tons heavier中为什么不用heavy的原形

The sperm whale is about 30 tons heavier中为什么不用heavy的原形 The sperm whale is the heavier than the killer whale.请问哪儿错了, a sperm whale is 35 tons.对35 tons提问 Is a killer whale heavier than a sperm whale否定回答 the sperm whale is the largest toothed whale.3877 Sperm Whale的音标 Sperm whale的意思? The largest whale _____ (weigh)about 200 tons. the sperm whale is 15 meters.15 meters 划线提问 sperm whale the minke whale is the smallest baleen whale about 25~30 fee 20cm of a sperm whale's the length tooth is [连词成句