If Robinson______(learn) how to swim, he wouldn’ t have been trapped on that island.

admin2014-04-07 44

问题 If Robinson______(learn) how to swim, he wouldn’ t have been trapped on that island.

选项

答案had learned

解析从主句would have been trapped可知题中描述的是与过去事实相反的的假设，因此if从句应用had done的形式。

转载请注明原文地址:https://www.kaotiyun.com/show/6DYK777K

大学英语三级A级

相关试题推荐

随机试题

最新回复(0)