请帮忙分析一下句子成分：Make sure the door is never left unlocked.

请帮忙分析一下句子成分：Make sure the door is never left unlocked. 请帮忙分析一下句子的成分：the next step is to make sure that you know exa 请帮忙分析一下句子成分 Someone left the door of our classroom unlocked yesterday It 英语,请帮忙分析一下句子成分 请帮忙分析一下英语的句子成分 请大家帮忙分析一下句子成分~~~~~~~~~~ 分析句子成分请帮忙分析一下句子成份：A Thankgiving Day article in the newspaper you needn't have left the door unlocked.john has a key 你不需要留 We arrived the day that(on which) they left.这句的句子成分请大师帮我分析一下 This is the last time I warn you帮忙分析一下句子成分 是不是定语从句 Is there anything wrong with the car?帮忙分析一下句子成分.