Ⅳ. Think and say.
Talk about how to use digital devices wisely.
Checklist
1 I can talk about proper ways to use digital devices. ☆☆☆
2 I can use the expressions like In my opinion, I believe, I feel ... to show my thoughts. ☆☆☆
3 I can use infinitive as object complement to talk about advantages and disadvantages of digital devices. ☆☆☆

One possible version: I would advise my child to set a fixed time limit for using the smartphone. And I believe using it to study, such as watching educational videos and using learning apps could help my child.

【分析】
首先明确题目要求：围绕“如何明智使用数字设备”展开表达，需满足三个要求：1. 谈论正确使用数字设备的方法；2. 运用In my opinion、I believe等表达观点的句式；3. 使用不定式作宾语补足语的结构。解题思路：先确定具体可行的使用方法，再用指定句式表达观点，同时运用不定式作宾补的结构组织语言，形成符合要求的表达内容。
【解析】
解题步骤：
1. 紧扣话题“明智使用数字设备”，选取具体方法，如设定使用时长、用于学习；
2. 运用要求的观点表达句式（如I would advise...、I believe...）；
3. 使用不定式作宾语补足语的结构（如advise sb to set...）；
4. 整合内容，形成通顺的表达，符合题目要求。
【答案】
One possible version: I would advise my child to set a fixed time limit for using the smartphone. And I believe using it to study, such as watching educational videos and using learning apps could help my child.
【知识点】
观点表达用语、不定式作宾语补足语、话题口语表达
【点评】
本题考查围绕指定话题的口语表达能力，要求运用特定句式和语法结构，结合实际给出合理建议，是基础英语口语应用类题目，难度适中。
【难度系数】
0.5