So / Neither / Nor Substitution - Intermediate Exercises

So, neither, and nor work across tenses when you choose the correct helper verb. Positive agreement uses So + helper verb + subject: "I went to the concert" - "So did Anna." Negative agreement uses Neither/Nor + helper verb + subject: "I haven't finished" - "Neither have I." The helper verb comes from the original sentence, but it may change for the new subject: "She was late" - "So were her friends."

Intermediate practice includes past simple, present perfect, modal verbs, future forms, and be. Past simple uses did; present perfect uses have or has; modal verbs such as can, must, should, and would are repeated. Negative forms such as didn't, hasn't, can't, and won't need neither or nor. Negative adverbs such as never also make the agreement negative: "I had never tried it" - "Neither had she." These choices build accuracy across longer conversations. Checking the first sentence first prevents most helper-verb mistakes.