Why do English mistakes depend on your first language?

Because most persistent mistakes are interference, not ignorance. Your first language supplies a structure English does not have — a preposition that maps differently, a tense that does not exist, a word order that is correct at home — and it survives years of fluency precisely because it never stops you being understood.

My language is not listed. Does that mean it will not work?

No. These pages are written per language, but the analysis is not limited to the ones with a page — it reads the English you actually produced. The page is a head start, not a requirement.

Will fixing these make me sound like a native speaker?

That is not the goal and it is not a realistic one. The goal is that nothing in your English quietly undercuts your authority in a client meeting. An accent does not do that. A wrong preposition in a sentence about money sometimes does.

By first language

The mistakes that survive fluency

Once you are fluent, the errors that remain are the ones your first language keeps putting back. They do not stop you being understood. They are audible to a client, and nobody is going to correct you.

Hebrew speakersIsraeli tech and consulting selling into US and UK clientsIt depends from theIt depends on the
Russian speakersengineering teams across Eastern Europe and Central AsiaI will send reportI’ll send the report
Polish speakersPolish software houses and outsourcing firms working with Western clientsI sent you emailI sent you an
Portuguese speakersBrazilian and Portuguese teams working with US clientsActually we are workingWe’re currently working on
Hindi speakersIndian tech services working with US and UK clientsI am having aI have a question
Spanish speakersteams across Spain and Latin America working with US clientsActually we are inWe’re currently in the
French speakersFrench and francophone teams in international companiesWe can eventually addWe could possibly add
German speakersGerman, Austrian and Swiss engineering teamsI think that weI think we can
Italian speakersItalian teams and agencies working with international clientsI go in theI go to the
Ukrainian speakersUkrainian engineering teams working with US and EU clientsI will prepare documentI’ll prepare the document
Romanian speakersRomanian software firms working with Western European clientsThe actual version isThe current version is
Turkish speakersTurkish tech and outsourcing firms working with EU and US clientsI sent email toI sent an email
Dutch speakersDutch teams, where English is often the working language alreadyNo, that is aI don’t think that
Japanese speakersJapanese teams working with US and European partnersWe need to fixWe need to fix
Arabic speakersGulf and Levant tech and consulting selling into US and UK clientsWe need to improveWe need to improve
Mandarin speakersChinese and Singaporean engineering teams working with US and EU clientsI will send youI’ll send you the
Korean speakersKorean engineering and product teams working with US clientsWill send the documentI’ll send the document
Czech speakersCzech and Slovak software houses working with Western European clientsI sent you emailI sent you an
Greek speakersGreek and Cypriot teams working with EU and UK clientsI speak with theI spoke with the
Swedish speakersNordic engineering and product teams working with US and UK clientsIt’s not so bad.It’s working well —

Reading a list is not the same as knowing which one is yours. Paste a transcript and find out, rather than guessing.

Common questions

Why do English mistakes depend on your first language?: Because most persistent mistakes are interference, not ignorance. Your first language supplies a structure English does not have — a preposition that maps differently, a tense that does not exist, a word order that is correct at home — and it survives years of fluency precisely because it never stops you being understood.
My language is not listed. Does that mean it will not work?: No. These pages are written per language, but the analysis is not limited to the ones with a page — it reads the English you actually produced. The page is a head start, not a requirement.
Will fixing these make me sound like a native speaker?: That is not the goal and it is not a realistic one. The goal is that nothing in your English quietly undercuts your authority in a client meeting. An accent does not do that. A wrong preposition in a sentence about money sometimes does.