精明购物指南：精准淘到心仪超值好物
The phrase "It is a deal" signals agreement, often in negotiations or transactions, showing mutual consent to agreed terms.
DET Chinese / 中文
多邻国英语测试的实用技巧、练习指南和提分策略.
Helpful tips, practice guides, and score improvement strategies for the Duolingo English Test.
英语精通轻松之道：让背诵化繁为简
"Know something by heart" means to memorize something completely and recall it without notes. Historically, the heart was seen as the center of memory and emotion, symbolizing deep, prompt-free recollection.
玩转 a, an, the：实用范例与语法技巧
Articles define if something is specific or general. English has two articles: definite and indefinite. Knowing how and when to use them is essential to mastering English. "The" is used for specific nouns known to the reader.
完成进行时详解：实例助你文笔更精湛
The perfect progressive tense shows an action that began in the past, continued for a time, and may still be ongoing. Form: "have/has been" + present participle. Emphasizes duration or continuity.
感恩学习：英语能力飞速提升的秘密武器
Expressing gratitude builds strong relationships and a positive atmosphere. Saying "thank you" is a simple, effective way to show appreciation in many situations.
揭秘“我哪知道”：这句口头禅背后，竟藏着意想不到的来历
"Beats me" is an informal English phrase meaning "I don't know." It's used to show genuine uncertainty. Its exact origin is unclear but may relate to the idea of being puzzled or overwhelmed.
从优秀到卓越：提升你的英语词汇量
Please provide the content for "Effective Speaking Strategies for the Duo" so I can process it as instructed.
精通“当...时”与“在...期间”：英语语法清晰指南
Understanding "while" and "during" helps with expressing time. "While" is a conjunction showing two actions happening at once and includes a subject and verb (e.g., She read a book while). They serve different grammatical roles.
英语进阶：掌握“同时”与“然而”连词的精髓
"While" is a conjunction used to link ideas by indicating simultaneous actions or contrast. It shows that two actions occur at the same time, helping express parallel events.
精通高级条件句：句首“Had”的精妙用法
She had finished