Mike did his homework two hours ago.(改疑问句）是不是用did提问?Hurry up!Or you will miss the train.(改为同义句）He has fifteen bikes to fix up.(对划线部分提问））这句是用HOW LONG吗我英语基础不好,有些做不来
问题描述：
Mike did his homework two hours ago.(改疑问句）是不是用did提问?
Hurry up!Or you will miss the train.(改为同义句）
He has fifteen bikes to fix up.(对划线部分提问））这句是用HOW LONG吗
我英语基础不好,有些做不来
答
上面的答案是正确的。补充一句，HOW LONG是多长时间，通常对时间来提问。比如：how long did you spend to fix up the bikes?你用多长时间修自行车？
答
Did Mike do his homework two hours ago?
If you don't hurry up,you'll miss the train.
You'll miss the train unless you hurry up.
How many bikes does he have to fix up?