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课件网) These bad habits, if left unchecked, could lead to more serious ones when they become adults. 如果任其发展，在他们长大成人后，这些不良习惯可能会导致更为严重的有害习惯。 状语从句的省略 1) 可以省略成分的状语从句：时间、条件、让步、方式。 2) 状语从句省略成分的条件：从句主语与主句主语一致，或从句主语是it; 从句谓语含有be，包括系动词be、进行时态的be或被动语态的be。 条件状语从句的省略，if后面省略了they are 3) 常见的连词：when, while, once, before, whenever, if, unless, though, although, as, as if。 4) 状语从句省略成分后常见的类型：连词+现在分词/过 去分词/ 介词短语/ 形容词。 e.g. If involved in the case, you will be punished. If neccessay, you can choose me to make the presentation. If possible, I wish to go there next summer. He would never do this unless compelled. which引导的非限制性定语从句 2. For example, some of them may become involved in tobacco or alcohol abuse, which can lead to physical and mental health problems. 例如, 一些青少年可能会吸烟成瘾或酗酒, 造成身心健康问题。 abuse n. 1) the use of something in a way that it should not be used 滥用 2) cruel or violent treatment of someone 虐待 3) rude or offensive things that someone says when they are angry 辱骂，谩骂 abuse vt. 1) to deliberately use something for the wrong purpose or for your own advantage 滥用 2) to treat someone in a cruel and violent way 虐待 3) to say rude or offensive things to someone 辱骂 e.g. We are determined to fight drug abuse in schools. The girl suffered years of physical abuse. Tony was left shouting abuse as the car sped off. e.g. Morris abused the trust the firm had shown in him. The poor had been abused and treated as slaves. The crowd started abusing him after he failed to save a goal. 【拓展】ab- (前缀)，表示“脱离、分离”、“非，反” 【语境应用】写出下面句子中画线单词的词性和中文释义。 1) Rose said she had been a victim of child abuse. _____ _____ 2) He showed how the rich and powerful can abuse their position. _____ _____ 3) What she did was an abuse of her position as manager. _____ _____ 4) Unfortunately, when the police found the children, they had been abused physically and emotionally. _____ _____ n. 虐待 v. 滥用 n. 滥用,妄用 v. 虐待,伤害 3. To prevent harmful habits like these from dominating a teenager’s life is essential. 防止此类有害习惯主宰青少年的生活是至关重要的。 此句为“主系表”结构的简单句，不定式短语作主语。 There are three sentences in the passage which contains the same structure: infinitive phrase is used as the subject. Look for them. ▲ However, during this period, it can be easy for some of them to form bad habits. ▲ To change bad habits is never easy, even with many attempts. ▲ After all, it is not easy to break bad habits. dominate vi. & vt. to control someone or something or to have more importance than other people or things 支配，控制，占有优势 e.g. The industry is dominated by five multinational companies. Her loud voice totally dominated the conversation. The book ... ...
