问题描述：
请问下列句子那里有错?（每句只有一处）
1.if we know more about giving the first aid,we may help people in an emergency.
2.a drowned man is screaming for help in the river.
3.knocked down by a car,he was bled to death.
4.help,the baby pis choked on some candy!
5.my pen has run out of inks.can you lend me some?
第三个问题中我打醋了，应该是“is”，不是“pis”
1.if we know more about giving the first aid,we may help people in an emergency.
2.a drowned man is screaming for help in the river.
3.knocked down by a car,he was bled to death.
4.help,the baby pis choked on some candy!
5.my pen has run out of inks.can you lend me some?
第三个问题中我打醋了，应该是“is”，不是“pis”
问题解答：
我来补答展开全文阅读