Teacher Discussion Forums

Why some of sentences (*) are incorrect with regard to ascept or tense? (i) a. *Twice, Peter didn't ride his bike to the seaside. b. For two years, Peter didn't ride his bike to the seaside. c. *In two years, Peter didn't ride his bike to the seaside. (ii) a. *Twice, Peter didn't stand on the beach....

It is from the book written in Korean, and I translated it in English.
I think these are understandable.
If you say so, what's wrong with above examples?
Please help me

I found the following in my grammar book. When considered as being, "as" 1)'As' can be omitted in the sentences with the following verbs. acknowledge, adopt, appoint, consider, crown, deem, designate, elect, esteem, imagine, mark, nominate, ordain, proclaim, rate, reckon, report, want. Exa) The pres...

What's the difference between "be afraid of" and "be afraid to-v" and why is it incorrect to use to infinitive in the following sentences? a'. *I'm afraid to crash. b'.*I don't like to speak French because I am afraid to make mistakes. c'. I* am afraid to dive into the swimming-pool. d'. *I am afrai...