【问】 “Will the cottage be cold?” “Yes，make sure____the heater.”

A. you light B. lighting

C. you’ll light D. for lighting (TOEFL，71.10;75.11)

《TOEFL，GRE解题词典》(译林出版社，P.600)在解此题时说：“make sure后接的that从句中，谓语用(should)+原形动词。”这种解释对吗?

【答】 make sure后接的that从句并不需要用现在时虚拟式(be)或should+动词原形。此题之所以应当选A (you light)，是因为make sure后接的that从句应当用一般现在时来表示将来时间，如同在when从句和if从句中那样。因此之故，应排除选C (you’ll light)的可能性。请看下面的证明例句：

1. Make sure (that) they do not escape.(NAECD)

要确保不要让他们逃跑。

2. I will make sure that the letter leaves tonight. (Freeman)

我保证今晚把信邮走。

3. Make sure that you haven’t forgotten to pack everything you’re likely to need.(Palmer)

要确保不要忘记将所有你可能需要的东西打进包里。

4. Father makes sure that all the lights are off before he goes to bed.(DAI)

父亲确保在他上床睡觉前所有的灯都已灭了。

5. We must make sure that the blade of the saw is sharp.

我们必须确保锯刃锋利。

6. His job is to make sure that the structures are sound.

他的工作就是确保这些结构完全可靠。