非谓语的问题.______ what to do next,he turned to me for help.______ (Not know)what to do next,he turned to me for help.______(sleep)late in the moring,Bob turned off the alarm.主句是过去式,那用非谓语的话应该用哪种形式?
问题描述：
非谓语的问题.______ what to do next,he turned to me for help.
______ (Not know)what to do next,he turned to me for help.
______(sleep)late in the moring,Bob turned off the alarm.
主句是过去式,那用非谓语的话应该用哪种形式?
答
Not knowing;
Sleeping;
这两个空考察的要求都一样，非谓语部分与主句之间都是因果关系，时态上都可以用一般过去时，但是，非谓语部分省略了和主句一样的主语，故非谓语从句部分用现在分词形式，表示主动关系，这是答案的关键；
答
非谓语动词，题一是主动形式，应为Not knowing
题二为Having slept
答
Not knowing what to do next,he turned to me for help.
表示情形,用ing形式
To sleep late in the morning,Bob turned off the alarm.
当表示目的的时候,用to do.
答
to do具体的特别是将来的动作 Smoking is bad for health. 吸烟对人身体有He advised having a rest.他建议休息。 He advised me to have a rest.