To see how slow he drove, you must run slow along with the car.
上句中的 how slow he drove 和 run slow, 其中的 slow 都用作副词, 为什么 C(run slow) 却是错误的?
slow 和 slowly 都可用作副词,但是 slow 用作副词是有一定限制的。主要与 go, drive 和 pass 连用:
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Danger, go slow. (路标警告用语) 危险, 慢行。
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Drive slow! 开慢点儿! (慢开!)
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You are going too slow. (EED) 你走得太慢了。
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Go slow through the village. (Palmer) 慢慢地通过村庄。
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The car went slower and slower until it came to a standstill. (Wood) 车子越开越慢,终于停下来了。
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How slow he drives! (LDCE) 他开得多慢!
另外,还用于成语 go slow(慢慢干,怠工):
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You ought to go slow until you feel really well again. (OSD) 你得慢慢来,直到你真的感到你恢复了健康。
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All our mail is being delayed as the postal workers are going slow. (Chambers) 我们所有的邮件都被耽误了,因为邮政工人正在怠工。
即使如此,还是有人主张使用 drive slowly:
He drove the car slowly into the garage. / He slowly drove the car into the garage. (CGEL) 他慢慢地把车开进车库。
上面试题的出题者显然是主张 drive slow 是可以接受的,而 run slow 是不可以接受的,应改为 run slowly。但是我们认为以上试题并不恰当,因为 run slow 的实例俯拾即是:
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Ami ran (the) slowest. (CGEL) 埃米跑得最慢。
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The watch runs slow. (《英汉大词典》) 这表走得很慢。