[误] The train was so crowded that there was hardly sufficient room for you.
[正] The train was so crowded that there was scarcely sufficient room for you. 注：副词 hardly 和 scarcely 虽然都含有“几乎不”等否定含义，有些时候也可以互换，如：I could hardly/scarcely recognize her（我几乎认不出她来了），但仍有细微的差异。如在强调数量“不足”时只能用 scarcely，这时它常与 enough、sufficient等词连用。
