effort表示“努力”時(shí)，其后可接動(dòng)詞不定式作其定語(yǔ)，偶爾也可接介詞短語(yǔ)作定語(yǔ)。
make efforts、make an effort、make every effort后面常接動(dòng)詞不定式，表示“努力做某事”，接an effort時(shí)表示“做一番努力”; 接efforts時(shí)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.
他全力以赴以按時(shí)完成這項(xiàng)工作。
The project has demanded considerable investment of time and effort.
該項(xiàng)目已讓我們投入了相當(dāng)多的時(shí)間和精力。
We need to make a concerted effort to finish on time.
我們需要通力合作才能按時(shí)完成。
The local clubs are making every effort to interest more young people.
地方俱樂(lè)部正在盡一切努力來(lái)吸引更多的年輕人。
She made a visible effort to control her anger.
看得出她竭力控制自己不發(fā)火。