连⋯⋯，更不用说⋯⋯

The structure "连⋯⋯，更不用说⋯⋯" is used in Chinese to emphasize a point by illustrating an extreme case or a lesser example that is already considered inadequate or surprising. It translates roughly to "even... let alone..." in English. This construction highlights that if the first part is true or difficult, then the second part is even more so.

For example:

• 连他都不会，更不用说我了。 (Even he can't do it, let alone me.)
• 我连上次的考试都没通过，更不用说这次的了。 (I didn't even pass the last exam, let alone this one.)
• 他连这几个字都不会写，更不用说写篇作文了。 (He can't even write these few characters, let alone write an essay.)

In these sentences, the first clause presents a situation that is already challenging or surprising, and the second clause emphasizes that the situation is even more difficult or unlikely. This structure is effective for making strong comparisons and highlighting the inadequacy of the subject in relation to the context provided.