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Grammar Points
A、B、C— Enumeration with 、HSK 1
Use the `、` comma to list items or options in a short series; this keeps the sentence compact and is common in menus or headlines.
"账号设置、我的关注、我的收藏、申请的报道、退出登录。"
"阿里巴巴-W、中芯国际、比亚迪股份分别遭净卖出6.30亿港元、5.98亿港元、5.20亿港元。"
...后 + verb— Sequential actions with 后HSK 2
Attach `后` to a verb phrase to say that one action happens after another; it highlights the sequence of events.
"打开微信“扫一扫”，打开网页后点击屏幕右上角分享按钮。"
同比/环比 + verb/adjective— Period comparisonHSK 5
Put `同比` (year-on-year) or `环比` (month-on-month) before verbs/adjectives to compare the current data with the same period last year or the previous period.
"2月商品猪销售收入13.27亿元，同比下降7.42%。"
"商品猪销售收入13.27亿元，环比下降18.49%，同比下降7.42%。"
由 + agent + 提供 + service— Passive with 由HSK 4
Use `由` plus an agent before the verb to show the passive voice—what receives the action rather than who performs it.
"本站由阿里云提供计算与安全服务，违法和不良信息、未成年人保护举报电话…"
分别 + verb + number— Respective actions with 分别HSK 4
Insert `分别` to clarify that each subject performs its own action and to list the corresponding results; numbers often follow to contrast the outcomes.