■ successful 与 successive

前者是“成功的”，后者是“连续相继的”。

• a successful attempt to land on the moon成功的登月之举
• three successive years of low rainfall连续三年的少雨。

• hurt
• i am
• identify
• if
• if
• if not
• if only
• if only because
• ignore
• ill
• illiterate
• i'm
• imagine
• immerge
• immerse
• immigrant
• impact
• imply
• imply 与 infer
• impossible
• impossible
• i'm/this is
• in
• in
• in