十三、~~~ enable Object(受词) to V (......使......能够......)
　　例句：Listening to music enable us to feel relaxed.
　　听音乐使我们能够感觉轻松。

　　十四、On no account can we V ~~~ (我们绝对不能......)
　　例句：On no account can we ignore the value of knowledge.
　　我们绝对不能忽略知识的价值。

　　十五、It is time S 过去式 (该是......的时候了)
　　例句：It is time the authorities concerned took proper steps to solve the traffic problems.
　　该是有关当局采取适当的措施来解决交通问题的时候了。