effective的介词搭配（effective用法及固定搭配）

effective at，例如：

1.But compared with other sedentary activities, like knitting, viewing TV may be especially effective at promoting unhealthy habits.不过，与其他久坐不动的行为比起来，比如织毛衣，看电视可能在促成不健康的习惯方面尤其有效。

2.This drug is very effective at the initial stage.这种药在初期很有效。

3.Research has also suggested that it can also make us more effective at our jobs.研究还指出，休息能让我们工作更高效。