此句是宾语从句,表示客观事实真理,用一般现在时,和前面的时态无关,前后不用保持一致,从句主语the sun是单数,be动词用is。因此本题答案为“is”。 结果一 题目 Complete the following sentences,using the right verb forms.As a school boy I already knew the sun_(be)the center of the solar system....
Verb Forms动词形式In English, verbs (words that express an action or state of being) have five forms.英语中，动词（描述一个动作或一种状态的词）有五种形式。Infinitive Form: to + basic verb不定式：to + 动词的基本形式Simple Present: basic verb or basic verb + "s" (3rd person ...
Verbs play an integral role to the structure of a sentence. They constitute the root ofthe predicate, which, along withthe subject(the “doer” of the verb’s action), forms a full clause or sentence—we cannot have a sentence without a verb. ...
4.03Six Forms of Verbs All verbs, with the exception of Modal Verbs, have six forms: 1.Base form The base form of a verb is the dictionary-entry form of the verb, e.g., swim, walk, and serves the following functions: a.Present Form The base form is identical to the present form ...
In informal writing and speech, we sometimes omit the subject in commands. The subject is understood to beyou, as inRun!We tend not to do this In formal writing. What are real-life examples ofverb? The following chart gives more examples of the different forms thatverbscan take. ...
主语是复数,动词用原形。 - **Do** you **play** the piano? 主语是第二人称,动词用原形。 - **Does** your father **spend** a lot of time fishing? 主语是第三人称单数,动词用单三形式。 - Whose piano **is** this? 主语是第三人称单数,动词用单三形式。
(forms that are used to show when an action happened); they can also be used asadjectives. Thepresent participlealways ends in-ing:calling,loving,breaking,going. (There is also a kind of noun, called agerund, that is identical in form to the present participle form of a verb.) Thepast...
There are five verb forms in the English language. Those are root (or an infinitive), third-person singular, present participle, past, and past participle. Root Form of the Verb The root form of the verb is also known as present infinitive or simply infinitive. The infinitive form of the...
There are up to five forms for each verb: root, third-person singular, present participle, past, and past participle. Root form of the verb The root form of a verb is the base form of the word. Roots have not been conjugated and do not include prefixes or suffixes. Here’s a tip:...
2 Choose the suitable verb forms to complete the sentences.选择合适的动词形式来完成句子。1 I'm (working/being worked )at home today because my office is (painted/beingpainted).我今天在家工作,因为我的办公室正在被粉刷。2 The alarming report is written/being written )It will be finished soon....