(1) If it had been not for your advice, I woud have lost a lot of money.
→ had not been
(2) If it were for a time machine, I could travel freely in time.
→ With / If I had
(3) I wish I can speak more fluent English. → could
(4) I hope that there are twenty-five hours in a day.
→ wish, were
(5) At that time, I felt as if someone had been watching me.
→ were [was] watching
（解答） I wish I had learned (how) to play a musical instrument when I was young.
（別解） I regret that I did not learn (how) to play a muscal instrument when I was a child.
（解答） I wish something wonderful would happen to me.
（別解） I hope (that) something wonderful will happen to me.
（解答） I wish I could drive as well as you.
（別解） I wish I were as good a driver as you (are).
（解答） Mble phones today are very usful with many functions, so I feel as if I cannot do anything all day if I leave my noble phone at home.
（別解） Cellphones today are very useful because they have (so) many functions. Therefore, you would feel as if you were not able to d anything all through the day if you forgot to bring yours with you.
（解答） If he had not broken his leg, William could have become a great athlete.
（別解） If William had not broken his leg, he could be a great athlete now.
（解答） Human beings have imagination, which enables them to feel as if they have experienced what they have not actually experienced.
（別解） We have imagination through which we can feel (that) we have experienced what we cannot actually experienced.
（解答） When someone croticizes your opinions, you get upset, you feel as if they were attacking you, and you even have difficulty understanding what the other person is talking about.
（別解） If your ideas are criticized, you cannot stay calm and feel (that) you youraself are being attacked, so you become unable toeven understand what the other person is saying.
（解答） We hardly ever think about the role (that / which) language plays in our daily lives, or what a world without language would be like.
（別解） We seldom think about how language influences our daily lives or what a world where there were no language would be.
（解答） When you talk for just a while with someone you are meeting for the first time, you sometimes begin to feel as if you have known them for decades.
（別解） After only having a short chat with someone you have never met before, you sometimes feel like you have known them for many years.
（解答） I was very embarrassed when I realized how little I knew about the politics, economics, or social problems in the U.S. I wished I had read more newspapers and magazines before going there.
（別解） I was really embarrassed to find (that) I knew almost nothing about the politics, economics, or social problems of the U.S. I wished I had read more about the U.S. in newspapers or magazines before I had gome there.
If I could use a time machine, I would return to the time of Shakespeare to witness England's Golden Age, which saw the flowering of poetry, music, literature and exploration abroad. The English language was in its richest phase of development, with Shakespeare coining thousands of new words and phrases. All the excitement of this social and linguistic development could be experienced at the Globe Theater in London, where I could see Shakespeare himself performing in one of his own plays. （81語）