Question

1.there's little time left .i 'm afraid we have t

o make a decision as soon as possible. 请问此句中的left做什么词性? make a decision 能换成 decide?
2.()the children have fun ,parents can take dance lesson on the beach.
A when B if C while D once另译这个句子
3.it is not safe to get into the house (). 进入着火的房间不安全的.请问括号处是填 on fire 还 是 catch fire.
4.has Tom finished his homework yet? sorry, i don't know ,but just now he ()his homework.A did B was doing C has done D is doing
5.do you know what to do first when we burn ourselves. 请问ourselves能不能去掉
6.did you see Mr Black just now ? yes, he () his car when i met him.
A parked B was parking C parks D will park 另park 应该是短暂性动词吧

Answer 1

1 . left是动词的过去分词用作形容词做后置定语,修饰time make a decision 能换成 decide是可以的。

2 C 孩子们再玩，家长却在在海滩上上舞蹈课

3 on fire 着火，表状态 catch fire. 生火

4 B was doing

5 不能，去掉后 burn缺失宾语

6    B was parking
意思是：你刚才看到Mr. Black了吗？
             是的，我看到他时他正在停车！

park 是不是短暂性动词我在大纲上没找到啊，应该是吧，不过进行时可以表示动作的延续。

追问

2 C 孩子们再玩，家长却在在海滩上上舞蹈课 请说说为什么要选C?

追答

这个只和when在一起比较难判断
while 一般连接的是两个进行时态
when 两句的是一个进行时，一个一般现在时