18. Computers are becoming faster, more powerful, and more reliable, and so too are modems, they are the devices to allow two or more computers to share information over regular telephone lines. (A) so too are modems, they are the devices to allow (B) so too are modems, the devices that allow
OG解释“To allow is not an idiomatic way to modify devices; either that allow or allowing would be correct.” 请问:为什么不能用to allow 呢?
101. El Nino, the periodic abnormal warming of the sea surface off Peru, a phenomenon in which changes in the ocean and atmosphere combine allowing the warm water that has accumulated in the western Pacific to flow back to the east. (D) is a phenomenon in which changes in the ocean and atmosphere combine to allow the warm water that has accumulated (E) is a phenomenon where ocean and atmosphere changes are combining and allow the warm water accumulating OG解释: If the participial phrase were to modify the previous clause, a comma would have to be inserted between combine and allowing. A better choice would be to follow combine with to allow, C)showing purpose.combine to allow shows the purpose of the changes. 为什么这里又反过来呢? 想不明白。请指教。谢谢。 |