She was the only one to survive the air crash. She was the only one survivng the air crash. Sha was the only one who had survived the air crash. She was the only one who survived the air crash.
1. 不可取。用不定式不是不行,但是: 前面用了she was, 后面应该跟完成时 to have survived 2. 独立句子不可取,如果前面有语境搭配就可产生不同的理解。 As of yesterday, she was the only one surviving ... 表达到昨晚为止,她是唯一幸存者。(用进行时表达出的未竟之意是可能并未脱离险境,最终会不会不治目前无法判断。) 3. 语法上没问题。用来陈述“当年”的一场空难。 4. 口语中如果结合语调,这样的表述也可以接受,属于特别强调“the only one" 的一种表达方式。