Lesson 18
判断你所听到的内容与图片是（√）否（×）相符。

1. (×)
2. (√)
3. (×)

写一写 连词成句。
1. should, help, old, you, people (.)

2. play, the, on, don't, street (.)

3. must, we, keep, the, off, grass (.)

4. litter, not, do (.)

5. cross, don't, road, the (.)

6. mustn't, pick, we, flowers (.)

1. You should help old
people.
2. Don't play on the street.
3. We must keep off the
grass.
4. Do not litter.
5. Don't cross the road.
6. We mustn't pick flowers.

【分析】
本题为英语连词成句题型，解题时需先根据句末标点判断句子类型（陈述句或祈使句），再结合单词词性、固定搭配及语法规则排列单词，注意否定词的位置（如祈使句否定用Don't/Do not，情态动词后接动词原形）。
【解析】
1. 句末为句号，确定为陈述句，主语是you，情态动词should后接动词原形help，old people作宾语，组合得You should help old people。
2. 句末为句号且含don't，为祈使句否定式，以Don't开头，后接动词原形play，地点状语on the street，组合得Don't play on the street。
3. 句末为句号，确定为陈述句，主语是we，情态动词must后接固定搭配keep off，再接the grass，组合得We must keep off the grass。
4. 句末为句号，为否定祈使句，用Do not+动词原形litter，组合得Do not litter。
5. 句末为句号且含don't，为祈使句否定式，以Don't开头，后接动词原形cross，再接宾语the road，组合得Don't cross the road。
6. 句末为句号，确定为陈述句，主语是we，情态动词mustn't后接动词原形pick，再接宾语flowers，组合得We mustn't pick flowers。
【答案】
1. You should help old people.
2. Don't play on the street.
3. We must keep off the grass.
4. Do not litter.
5. Don't cross the road.
6. We mustn't pick flowers.
【知识点】
英语连词成句、祈使句、情态动词用法
【点评】
本题为基础英语连词成句题，主要考察学生对基本句式、固定短语及情态动词的掌握，属于英语基础巩固类题型。
【难度系数】
0.3