The little girl pretended___when her mother came into her room.为什么空格处
问题描述：
The little girl pretended___when her mother came into her room.为什么空格处
为什么空格处是to be sleeping,而不是to hav been sleeping.
答
妈妈来了,小女孩装成正在睡觉
要是填to have been sleeping就成了
妈妈来了,小女孩装成刚才在睡觉（现在在不在睡觉都不要紧,就好象是妈妈来了以后女儿说“刚刚在睡觉呀”的意思）