彼は日本語どころか英語も話せません。
- He can’t even speak English, let alone Japanese.

彼は日本語どころか英語も話せません。 meaning: He can't speak English, let alone Japanese.

Japanese sentences typically follow a Subject-Object-Verb (SOV) structure. This sentence demonstrates that with the subject 彼(he), the object of not being able to speak is both 日本語 and 英語, and the verb 話せません(can't speak) coming at the end. The use of どころか changes the focus of the sentence by adding "let alone". * The basic structure is: Subject + (Topic) + Object + Conjunction + Object + Verb. * The topic marker は(wa) is often implied. In this sentence, it can be added to the subject to make it more obvious that it is the topic. For example, 彼は(as for him). * Particles like も(mo) and か(ka) are crucial for grammatical meaning.

どころか is a fixed expression used to emphasize that something is *not* the case, or that someone is incapable of something, with an even more extreme example being *also* impossible or beyond their ability. It suggests the first thing mentioned is obvious, and the subsequent thing is even *more* unlikely. * It translates to "let alone", "far from", or "not to mention." * It often appears with negative verb conjugations. * Here's how it's used: * 日本語どころか英語も - "Let alone English, Japanese..." (implies he can't speak Japanese). * The structure is: Noun/Clause + どころか + Noun/Clause + Verb (negative). * Example: 子供は漢字どころかひらがなも読めません。 (The child can't read hiragana, let alone kanji.)

The particle も (mo) adds emphasis and means "also," "too," or "even". It replaces the particle that would normally follow the word it modifies. * In this sentence, も modifies 英語 (English), indicating that not only is he unable to speak Japanese, but he *also* can't speak English. * It replaces the は(wa) or が(ga) particle that would normally follow a noun. * Example: 私も行きます。(I will go too.) - も(mo) replaces は(wa) here. * Another example: 熱もありません。(I don't even have a fever.)

The verb 話せません(hanasemasen) is the negative, polite form of the potential form of the verb 話す(hanasu), which means "to speak" or "to talk." * The base form is 話す(hanasu). * To form the potential form: change the final す(su) to せる(seru): 話せる(hanaseru) - "can speak." * To make it negative, add the negative form of the verb できる (dekiru, "can do") which is できません(dekimasen) to it: 話せません(hanasemasen) - "cannot speak." * ません(masen) is the polite negative form. * This conjugation shows the inability to perform the action of speaking, emphasizing the negative aspect of his skill.

The sentence's structure and the use of the fixed expression どころか already emphasize the inability, but it is further reinforced by the choice of words. * The overall impact is strengthened by combining the emphatic meaning of どころか(let alone) with the negative potential form of the verb. * The choice of words and phrases contributes to the meaning, and the emphasis is to portray the extreme nature of the lack of ability. * The meaning will be even more clearly presented to the target reader.