【正确答案】Tense and aspect are two important categories of the verb, and they were not separated in traditional grammar. Based on the tense system in Latin grammar, English used to be said to have sixteen tenses. Nowadays, linguists make two distinctions: one between time and tense, and the other between tense and aspect. Time is a universal concept, which every language is capable of expressing; while tense is a linguistic concept, which varies from language to language. The difference between tense and aspect is that the former is deictic, i.e. indicating time relative to the time of utterance; while the latter is not deictic, the time indicated is not relative to the time of utterance, but relative to the time of another event described, or implied, in the narrative. As a result, there are only two tenses recognized now: past and present. The so-called future tense is not expressed in the same way as these two. That is, it is not expressed by morphology/not by the different forms of the verb, but by various other means, such as "will/shall + infinitive", "be going to + infinitive", "present progressive aspect", "simple present tense" and "will/shall + progressive infinitive". And will and shall are basically modal verbs like can and may.

【答案解析】[解析] 本题考查英语将来时的表达方式。