1. You can’t end a sentence with a preposition 不克不及以介词开头
?(she enjoys being fussed over.她爱好被簇拥的感到)
?(they must be convinced of the commitment that they are taking on.他们必须明白自己要承当的义务。)
?(Tom had no-one to play with.没有人可以和汤姆一路玩)
Who、where、what打头的问句：questions beginning with who, where, what, etc.
(what music are you interested in?你爱好什么样的音乐？)
2. You can’t start a sentence with a conjunction 不克不及以连词开首
Conjunctions are words such as and, but, so, and if, which are used to connect clauses, sentences, or words. This grammatical superstition arises from the thought that because these words are used to connect separate clauses.The argument against using and or but to introduce a sentence is that such a sentence expresses an incomplete thought (or ‘fragment’) and is therefore incorrect. However, this is a stylistic preference rather than a grammatical rule.
3. Double negatives are always ungrammatical 两重可以上下分的电玩软件否定不符合语律例则
When two negatives are used to communicate a negative, then the usage is ungrammatical. The reason for this is that two negatives actually cancel each other out and create an affirmative statement. For example, the sentence ‘I don’t have nothing for you’is ungrammatical because the presence of two negatives technically switches the meaning to an affirmative one, so that it means ‘I have something for you.’
当两个否定词汇一同应用时，这类用法是不符合语律例则的。缘由是两个否定实际上相互抵消，表达肯定的含义。例如，这句话“I don’t have nothing for you”不符合语法，由于严格意义下去讲这两个否定词汇在一路表达了肯定的含义，表示“我有器械给你”。
Even though the use of double negatives in formal speech and writing is nonstandard, the use of double negatives is common in areas such as informal speech and popular music.
However, there is one use of double negatives that is entirely grammatical. In this use, the double negative is used to express and reinforce an affirmative.
I couldn’t not help him. [meaning: I strongly felt I should help him]
4. Splitting infinitives is a mistake 不定式不克不及分隔应用
For the uninitiated, splitting infinitives is the practice of placing an adverb between ‘to’and the corresponding verb, as in ‘to lightly tap.’Splitting infinitives is a common peeve of grammar enthusiasts, but like many such peeves it has been employed by well-regarded English prose stylists for centuries. However, take care before splitting those infinitives; many style guides and professors would still consider this a stylistic error.
对门外汉来讲，决裂不定式是在to和以后的动词之间放置一个副词，如“to lightly tap（轻拍）”。决裂不定式对语法爱好者而言是个罕见的让人忧?的成绩。然则有很多有名的英文散文家爱好应用决裂不定式的写作方法。不过，要当心应用决裂不定式，依然有文体书和专家认为这是文体缺点。
She used to secretly admire him.
You have to really watch him.
Those who believe that split infinitives are grammatically incorrect would rewrite these sentences as:
She used secretly to admire him.
You really have to watch him.
5. You can’t start a sentence with hopefully ?hopefully不克不及作为句子开首
This use of hopefully to mean ‘it is hoped’rather than the adverbial ‘in a hopeful manner’has been disputed in the past several years, though it has found its way into general acceptance.
Hopefully and thankfully can’t be reworded along the lines of other sentence adverbs, using the constructions ‘it is hopeful that’or ‘it is thankful that’:
Hopefully 和thankfully和其他句子副词不合，可以应用‘it is hopeful that’ 或许‘it is thankful that’的构造
Hopefully, planning delays will be minimal.
It is hopeful that planning delays will be minimal.
It is to be hoped that planning delays will be minimal.