as if /as though 所引導的子句其主詞及動詞可以省略, 因此 as if / though 之後可直接接不定詞片語、分詞片語、 介詞片語。
He smiled as if to welcome her.
(他微笑著, 像是向她表示歡迎。)
The boy said it in a low voice as if speaking to himself.
(那男孩低聲說話好像自言自語似的。)
The old man looked at the girl graciousl..-阿摩線上測驗