The danger of diet products lies not only in the psychological effect they have on us but also in(接上) the physical harm that they cause.
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The danger of diet products lies not only in the psychological effect they have on us but also in(接上) the physical harm that they cause.
The danger of diet products lies not only in the psychological effect they have on us but also in
(接上) the physical harm that they cause.
The danger of diet products lies not only in the psychological effect they have on us but also in(接上) the physical harm that they cause.
1,have an effect on sb.是固定短语,是：对某人有什么影响的意思,句中they have 做effect的后置定语,因此要用定冠词the
2 ,lie in… 是“在于……”的意思,而not only 是插入语,与后面的but also 相对应,是不仅……而且的意思
也就是说：减肥产品产生的危险不仅在于它对我们的心理影响,而且在于它对我们造成的人身伤害
句意：减肥产品的危险不仅在于其对我们的心理（影响）作用还在于他们对我们身体上造成的伤害。
have on 因为是定语从句，所以要将先行词放进来，have the psychological effect on （have effect on看得懂吧，对...有作用，对我们的心理作用）
lie 在于...
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句意：减肥产品的危险不仅在于其对我们的心理（影响）作用还在于他们对我们身体上造成的伤害。
have on 因为是定语从句，所以要将先行词放进来，have the psychological effect on （have effect on看得懂吧，对...有作用，对我们的心理作用）
lie 在于
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减肥产品的威胁不仅体现在心理影响上，它们还体现在它们所造成的物理伤害上