Understand product introductions, instructions and technology-use cases.
Evaluate usefulness, privacy, safety and suitability.
Write a product explanation, use experience or balanced review.
LEARN IN CONTEXT
Read and listen across several real contexts
This lesson uses the number and type of texts that fit the topic. Learn the same language across different situations instead of forcing everything into one dialogue.
Core textShort article
活动签到工具功能说明
Why this text is here: Read a product introduction that includes normal and fallback flows.
一款活动签到工具提供三种入口：手机二维码、工作人员搜索姓名，以及提前下载的离线名单。正常网络下，扫码通常最快；无法使用手机的人也可以由工作人员确认。An event check-in tool offers three entrances: mobile QR code, staff name search and a pre-downloaded offline list. Scanning is normally fastest, while staff can confirm people who cannot use a phone.
产品页面把“平均签到时间”作为主要指标，但也说明异常处理时间和重复登记率需要另外观察。高效不等于只有一个入口，而是大多数人快、少数异常也能完成。The product page highlights average check-in time but also notes exception handling and duplicate registration. Efficiency does not mean only one route: most users should be fast and exceptions should still complete the process.
Practical textShort article
一次小范围测试发现了什么
Why this text is here: Use a trial to identify a product weakness before broad rollout.
学校先用一场八十人的讲座测试新工具。七十四人顺利扫码，四人需要工作人员搜索姓名，两人的手机临时无法联网。后两人最终通过离线名单完成签到。The school tested the tool at an 80-person lecture. Seventy-four scanned successfully, four needed staff name search, and two phones could not connect; the latter two used the offline list.
测试还发现，离线名单入口藏得太深，第一次操作的志愿者找了近一分钟。团队因此决定改进界面，把备用入口放在首页，并在活动前下载名单。The test also found that the offline-list entry was too deeply hidden; first-time volunteers took nearly a minute to find it. The team decided to put the fallback on the home screen and download the list before the event.
电子版流程通常更高效，但测试时仍要检查没有手机或网络失败的人能否完成任务。Digital processes are often more efficient, but testing should check whether people without phones or with network failure can still finish the task.
Study the pattern, then replace the example information with details from your own situation.
选择复句：或是……，或是……
或是 A，或是 B
Use this paired form to present alternative possibilities or choices.
Yònghù kěyǐ huòshì sǎomiáo èrwéimǎ dēnglù, huòshì dào réngōngtái shūrù biānhào.用户可以或是扫描二维码登录，或是到人工台输入编号。Users can either scan a QR code to log in or enter an ID at the manual desk.
假设复句：一旦/假如/万一/不然
一旦/假如/万一 + 情况，（就）+ 应对；……，不然……
Use these forms to describe contingencies and the action that follows if a condition occurs.
Wànyī xiànchǎng wǎngluò zhōngduàn, jiù lìjí qiēhuàn dào líxiàn míngdān, bùrán páiduì kěnéng yuèláiyuè cháng.万一现场网络中断，就立即切换到离线名单，不然排队可能越来越长。If the on-site network fails, switch to the offline list immediately, otherwise the queue may grow.
Step 6 · Guided practice
Loading saved progress…
Submit the quiz to unlock lesson completion.
Step 7 · Communication task
写一段科技产品的平衡介绍或使用评价
你要向同学或同事介绍一个数字工具、设备或线上服务。
Your task
说明主要功能和使用场景
写出正常操作流程
说明至少一种异常情况和备用方式
根据测试或使用结果提出一个改进点
Write at least 120 non-space characters to continue
Self-check rubric
At least three lesson words are used accurately.
At least one lesson pattern is complete.
The response completes the communication target.
The Chinese can be read aloud without relying on English.
Step 8 · Review
Complete the mastery check
A lesson is complete only after the quiz, communication task and self-review requirements are met.
QuizNot submitted
Reach at least 70%.
OutputIncomplete
Write at least 120 non-space characters.
ReviewIncomplete
Complete all three self-checks.
Communication target
What you should be able to do after this lesson
Explain a technology product's functions, use cases, benefits, risks and limits.
Understand product introductions, instructions and technology-use cases.
Evaluate usefulness, privacy, safety and suitability.
Write a product explanation, use experience or balanced review.