VOA慢速英语:Improving Your Grammar and Pronunciation

短语讲解：

1. The important point in this report is that grammatical structures can have an effect on how a sentence sounds.

have an effect on 对…有影响，对…起作用
例句：I am sure that it will have an effect on our natural environment.
我肯定这会对我们的自然环境造成影响。

2. You can think about if you are using one structure too often, or if you are not using the right structure for the right situation.

think about 考虑…; 捉摸…
例句：I'll have a think about that
我会考虑考虑的。