这一组有十道原创题，由易到难，综合运用句子控制（sentence control）的技能：comma splice、从句、修饰语、直接引语和句子节奏。
先自己写下每个答案，再打开解析。许多句子有不止一种改法，所以请把你的 推理 与示范答案比较，而不只是看措辞。题目不标分数。
题目
1. 下面哪一句是 comma splice？(a) “Because it rained, we stayed in.” (b) “It rained, we stayed in.” (c) “It rained, so we stayed in.”
Show answer
(b)。 “It rained” 和 “we stayed in” 都是完整句子，只用逗号连在一起。(a) 中 “Because it rained” 不能独立成句，(c) 中连词 “so” 正确地连接了两个分句。
2. 用两种不同方法修正：“The shop was closed, we went to the market instead.”
Show answer
句号：“The shop was closed. We went to the market instead.” 连词：“The shop was closed, so we went to the market instead.” 从句也可以：“Because the shop was closed, we went to the market instead.” 每种写法都去掉了夹在两个完整句子之间的孤立逗号。
3. 给这句话加标点：are you ready asked Mr Lim
Show answer
“Are you ready?” asked Mr Lim. 引语以大写开头，以引号内的问号结束。提示语 “asked Mr Lim” 用小写开头，因为它延续这个句子。
4. 改正标点：“I’ll be there at six,” she said “don’t start without me.”
Show answer
“I’ll be there at six,” she said. “Don’t start without me.” 引语的第二部分是一个新句子，所以需要大写。提示语以句号结束，因为它位于两个完整的引语句之间。
5. 修正修饰语：“Wearing a bright yellow coat, the crowd easily spotted the cyclist.”
Show answer
句首短语看起来在描述人群，但穿外套的是骑单车的人。写成 “Wearing a bright yellow coat, the cyclist was easily spotted by the crowd.” 另一种好的改法：“The crowd easily spotted the cyclist, who was wearing a bright yellow coat.”
6. 告示写着 “We only have two tickets left.”。作者的意思是只剩下两张票。请改写，使意思不会被误读。
Show answer
“We have only two tickets left.” “Only” 限定紧跟在后面的词，所以它应该挨着 “two”。原句中的 “only have” 可能让人以为作者对这些票唯一做的事就是持有。
7. 合并成一个主要意思清楚的句子：“Priya was tired. She finished the map. She wanted to give it to her group.”
Show answer
一种好的写法：“Although Priya was tired, she finished the map because she wanted to give it to her group.” 主要意思是她完成了地图。“Although” 表示对比，“because” 给出原因。
8. 修正残句：“The match went ahead. Although the pitch was still wet.”
Show answer
“Although the pitch was still wet” 不能独立成句。把它接上去：“The match went ahead although the pitch was still wet.” 或者放在前面：“Although the pitch was still wet, the match went ahead.”
9. 这些句子长度都一样。请改写得有变化，让最后一个想法突出：“The market opened at dawn. Traders arrived. They set up stalls. They shouted prices. A cat slept under a table. Nobody noticed it.”
Show answer
一种好的写法：“The market opened at dawn, and as traders arrived and set up their stalls, the air filled with shouted prices. Under one table, a cat slept. Nobody noticed.” 长句汇集喧闹，短句把注意力转到小小的细节。选择的理由比确切的措辞更重要。
10. 这个句子有三个问题，请改正：Running down the platform, the doors closed, Hana groaned “I missed it”.
Show answer
问题有三个：悬垂修饰语（门不会跑）、comma splice，以及引语标点位置不对。一种改法：Running down the platform, Hana saw the doors close. She groaned, “I missed it.” 现在主语紧跟句首短语，splice 被句号分开，末尾的句号也放进了引号里面。
如果你答错了
| 错在哪里 | 回去复习 |
|---|---|
| 用逗号连接两个完整句子，或在逗号后用 “however”（第 1、2 题） | 修正逗号连接句（comma splice） |
| 标点放在引号外面、漏了大写，或换人说话没有另起一行（第 3、4 题） | 一致地给直接引语加标点 |
| 句首短语或 “only” 指向错误的词（第 5、6 题） | 澄清有歧义的修饰语 |
| 主要意思被埋住，或把从句当成句子留着（第 7、8 题） | 使用从句而不丢失主要意思 |
| 所有句子一样长，或短句没有目的（第 9 题） | 有意识地变化句子长度 |
| 同一句里漏掉不止一个问题（第 10 题） | 重做第 5、2、4 题，然后每次改完都朗读一遍 |
把每个错误记进错题记录与重测队列，这样你会在新句子上再次遇到同一项技能。写作修订对比视图让你比较第一次和第二次的修改，需要用自己的话重建句子时，摘要筛选与改写工作室很有帮助。
怎样用好这一组题
几天后，在不看解析的情况下重做答错的题。如果同样的错误再次出现，就重新学习对应的课，并写三个新句子来示范改法。
自己很难像陌生人一样读自己的句子。如果想让老师坐在旁边陪你读，可以看线上一对一 English First Language 补习。