endeavor 可数吗

　　effort表示“努力”时，其后可接动词不定式作其定语，偶尔也可接介词短语作定语。

　　make efforts、make an effort、make every effort后面常接动词不定式，表示“努力做某事”，接an effort时表示“做一番努力”; 接efforts时表示“作出多次努力”，接every effort表示“每做一次努力”。

　　例句：

　　He made a concentrated effort to finish the work on time.

　　他全力以赴以按时完成这项工作。

　　The project has demanded considerable investment of time and effort.

　　该项目已让我们投入了相当多的`时间和精力。

　　We need to make a concerted effort to finish on time.

　　我们需要通力合作才能按时完成。

　　The local clubs are making every effort to interest more young people.

　　地方俱乐部正在尽一切努力来吸引更多的年轻人。

　　She made a visible effort to control her anger.

　　看得出她竭力控制自己不发火。