语法

Already的两种用法

Already 除了用于完成时之外呢,还可以用作一个语气助词(intensive),表达不耐烦。used as an intensive after a word or phrase to express impatience. Enough already! 够了! Do you have to...

Don’t Study Conjugations And Declensions

declension: noun, adjective, or pronoun inflection especially in some prescribed order of the forms the way a verb changes form...

As 从句

As 从句

The operators ++ and — can be either prefix operators (++nc) or postfix (nc++); these two forms have different values...

need to vs don’t need to

need to vs don’t need to

the C programmer using the library need not worry about how lines are represented outside the program. There are two...

The subjunctive mood 虚拟语气

indicative mood   陈述语气 subjunctive mood 虚拟语气

Interjections 叹词

Interjection: the act of uttering exclamations a word or phrase used in exclamation something that is interjected or that interrupts...

例句集锦

You should by now have a full, comprehensive idea of how best to approach building a massive, highly targeted list....

Complex Sentences

Complex Sentences

C for Dummies, 2nd edition On the other hand, the time it takes to develop an assembly language program is...

How to learn grammar – any grammar!!!

Used to, be used to, Get used to, Would

used to do something: 以前经常做某事,现在不了。 be used to something 对某件事习以为常了 be accustomed to something get used to something 开始接受某件事,尝试习惯它 d...

Present Perfect vs Past Prefect

present perfect 发生在过去,持续到现在(present perfect simple),或现在还在持续(present perfect continuous) Started in the past, continuing right now Past perfect 发生在过去,终止于过去。Started in the past,...

Why is Present Perfect Complicated?

现在完成时的三种用法: 过去发生,一直持续到现在,或许将来也会。I have lived here for 2 years. 过去发生,对现在造成影响。I have broken my leg yesterday, so I can’t go to work...

英语语法 – 倒装 (Inversion)

For some time has enrollment in CS50 at Harvard been trending upward, as have been CS enrollments nationally. These things...

Alternate vs Alternative

Alternate vs Alternative

To alternate is to take turns; an alternative is an option. 1510s, from Latin alternatus “one after the other,” past...

Only then do we recommend using a database listed in that section

If you have a need for storing and interacting with specific types of data as is described in one of...