光合作用过程 - 智能英语陪练

📝 题目

The diagram below shows the process of photosynthesis in plants. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

📊 图表内容说明

图示光合作用过程：①植物根部从土壤吸收水分→②水分通过茎输送到叶片→③叶片通过气孔从空气中吸收CO2→④叶绿素利用阳光将水和CO2转化为葡萄糖和氧气→⑤氧气通过气孔释放到空气中→⑥葡萄糖用于植物生长或储存→⑥植物夜间呼吸消耗部分葡萄糖释放CO2。

✍️ 满分范文

主体段 1

The diagram illustrates the process of photosynthesis, by which plants convert light energy into chemical energy to sustain their growth.

改写题目，补充核心概念(convert light energy into chemical energy)——准确概括光合作用本质。

主体段 2

Overall, photosynthesis is a natural, cyclical process in which plants use sunlight, water, and carbon dioxide to produce glucose and oxygen. The process involves the absorption of raw materials, a chemical reaction driven by sunlight, and the release of by-products.

三个要素：①自然循环 ②输入(sunlight/water/CO2)和输出(glucose/oxygen) ③三个环节(absorption→reaction→release)。用by which引导定义从句。

主体段 3

The process begins when plant roots absorb water from the soil. This water travels up the stem to the leaves, where it is used in the photosynthetic reaction. Simultaneously, the leaves take in carbon dioxide from the air through tiny pores called stomata. Chlorophyll, the green pigment in leaves, captures sunlight and uses this energy to combine the water and carbon dioxide, producing glucose and oxygen.

描述材料吸收和化学反应。主动语态为主(roots absorb, leaves take in, chlorophyll captures)因为自然力量是主语。用Simultaneously表示同时发生——流程图中并行步骤的标记词。'called stomata'/'the green pigment'用同位语解释术语。

主体段 4

The oxygen, as a by-product, is released back into the atmosphere through the stomata. The glucose, meanwhile, serves as the plant's primary source of energy: it is either used immediately for growth and cellular functions or stored as starch for later use. At night, when photosynthesis cannot occur, plants respire by consuming stored glucose and releasing carbon dioxide, thus maintaining the natural carbon cycle.

描述产物去向。冒号引出葡萄糖的两种用途。末句描述夜间呼吸——补充说明完整循环，'maintaining the natural carbon cycle'呼应概述段的cyclical特征。

📚 核心词汇

convert (转化) · 核心动词 ☆ chemical energy (化学能) · 术语 ☆ absorption (吸收) · 名词化表达 ☆ stomata (气孔) · 术语(stoma的复数) ☆ chlorophyll (叶绿素) · 术语 ☆ by-product (副产品) · 描述次要产物 ☆

🏆 高分句型

convert light energy into chemical energy → 引出转化过程，用convert A into B清晰表达能量形式变化，适合描述流程图中物质或能量转换步骤。 ☆

a natural, cyclical process → 用名词短语概括过程整体特征，自然＋循环双修饰，既总结图表又引出下文分步描述，体现宏观把握。 ☆

in which plants use... to produce... → 定语从句补充说明过程细节，in which引导非限制性定语从句，使句子信息丰富且逻辑紧密，适合解释原理。 ☆

Simultaneously, the leaves take in → 用Simultaneously衔接并列步骤，强调同时发生，take in替代absorb更生动，增强流程描述的流畅感。 ☆

captures sunlight and uses this energy to combine → 介词use this energy to combine精准表达能量与物质结合，capture体现主动捕捉，突出光合作用的关键环节。 ☆

serves as the plant's primary source of energy → 用serve as点明功能与用途，比be更有层次，强调葡萄糖对植物的重要性，适合补充说明产物的价值。 ☆

maintaining the natural carbon cycle → 动名词作状语表示附带结果，maintaining将局部过程与生态意义关联，提升论述高度，适合总结扩展。 ☆

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满分范文 —— 英文原文 + 中文翻译 + 逐段解析

高分句型 / 核心词汇 —— 重点表达即学即用

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