例句：
I had a sensation of falling, as if in a dream.
我有一種墜落的感覺，像在夢中似的。
I don't feel as if I belong here.
我在這里感覺格格不入。
I felt as if my heart had stopped.
我覺得好像我的心都不跳了。
I ate as if there was no tomorrow.
我狼吞虎咽地吃著。
He suddenly appeared as if by magic.
他突然神奇地出現了。