【归纳拓展】 hesitate to do sth.犹豫做某事 hesitate about/over/at...(doing) sth.对……感到犹豫 hesitation n．犹豫 without hesitation毫不犹豫地

【即时巩固】 ①He jumped into the river to save the drowning boy without ________ (hesitate)． ②In case you need something, please __________________________ ask me. 如果你需要什么东西， 请毫不迟疑地对我说。 【答案】①hesitation ②don't hesitate to