绕口令虽然不容易说，但是很好玩，也能锻炼你的发音和吐字。同学们，快来看看你能在不犯错的情况下说多快吧！

1. A big black bug bit a big black dog on his big black nose.

2. A big black bear sat on a big black bug.

3. She sells seashells（貝壳） on the seashore.

4. I scream（尖叫）， you scream， we all scream for ice cream.