... `no' with singular and plural count nouns and uncount nouns. You use `no' to say that something does not exist or is not present.1 You use `all' with plural count nouns and uncount nouns ... skill they had or did not have, you use `could', `could not', or `couldn't'.He could run faster than anyone else.A lot of them couldn't read or write.3 You also use ... present simple tense.I can smell gas. Some other common verbs are not normally used in the present continuous or the other continuous tenses.concern, deserve, fit, interest, involve, matter,...