针对重大疾病出现了一系列疗法,比如针灸,灸术,按摩,拔火罐,气功,或者是用中草药结合加以食物辅助都非常的有效。
After emergency treatment of acute and dangerous diseases, acupuncture, moxibustion, massage, cupping, qigong and a combined treatment of medicinal plants and diet ______ proved to be very helpful.
请问句中横线部分应该填 have 还是 are,为什么?
After emergency treatment of acute and dangerous diseases, acupuncture, moxibustion, massage, cupping, qigong and a combined treatment of medicinal plants and diet have
proved to be very helpful.
prove 用作系动词,表示“证明是,结果是,发现为,显示为”,无被动语态。句型是:prove to be + adj. 其中to be可以省略。用完成时可以,但不可用被动语态(are proved)。例如:
These policies have proved to be highly conducive to economic growth.
这些政策日后证实是非常有利于经济的成长
It has proved to be a good method.
这结果是比较好的办法。
Contrary to what I thought, he has proved to be successful.
和我想的相反,他竟成功了。
The plan fell down because it proved to be too expensive.
这项计划因费用过高而告吹。
On closer examination, the painting proved to be a fake.
再经仔细观察,证实那幅画是膺品。
The new typist proved to be useless.
这位新打字员证明是不合格的。
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