✔ 最佳答案
(original//suggestion) = replace the original with the suggestion
(original//--) = delete the original
(+addition) = suggested addition
(XXX comments) = comments -- these are for your reference
Good morning everyone. Today, I’m going to present what we (have learnt//learnt) in last (Friday//Friday's) lesson. First of all, we (have learnt//learnt) that there are four types of modal verbs. They (are expressing//express) preferences like (would rather and would prefer//would in would rather and would prefer), giving advice like should and ought to, expressing possibility like may, might and could, (+finally) expressing certainty like must and can’t.
(Also, Miss Fung has//Miss Fung also) told us the past tense of (those//these) modal verbs. Would rather and would prefer will change to would rather have and would have preferred (+respectively). Ought to and should will change to ought to have and should have (.//;) May (will change//--) (XXX since you are using the same verb, you can omit the verb) to might and can (will change//--) to could.
We should remember (them//these verb forms) (it is important to change the tense of modal verbs in different sentences. Besides, we have known that had better is used to say that you should do something otherwise something bad may happen.//so that we can always write correct sentences.)
In (the//--) addition, Miss Fung (has//--) reminded us (+that) when the modal verb is followed by (noun, adjective, gerund or preposition// a noun, gerund, preposition or an adjective) (XXX You need articles for the nouns. Since the word adjective needs an "an", you can throw the word to the end and then you have to use only two articles. The article for the words gerund and preposition are assumed.), we should use (+the) verb to be after the modal verbs. For example, they should not have been skateboarding in the street. (XXX Your sentence is correct, but I think that Miss Fung's explanation is not quite so. In the above sentence, skateboarding is not a noun, but a verb. "They skateboard in the street" is the basic sentence from which your more complicated sentence is derived.)
Skateboarding is a noun, so we (had//have) to use verb to be after the modal verb. Finally, we (have learnt//learned) some new (vocabularies//words) (XXX Vocabulary is always a singular noun in normal usage -- You learn more words, and you then expand your vocabulary.). Nutritious is (a noun//the adjective) of nutrition. Punctual means always on time. This is the end of my presentation.
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Overall, I think that you did very well :)
2006-11-13 06:48:43 補充：
They (are expressing//express) preferences like (would rather and would prefer//would in would rather and would prefer), (giving//give) advice like should and ought to, (expressing//suggest) possibility like may, might and could, (+finally) (expressing//demonstrate) certainty like must and can’t.
