Question

急求托福TPO中的一个句子分析.(是倒装句？还是别的什么呢？)谢谢！

therefore, when observational assessment is used as a technique for studying infants perceptual abilities, care must be taken not to overgeneralize from the data or to rely on one or two studies as conclusive evidence of a particular perceptual ability of the infant.
care must be taken not to 。。。。这是什么语法啊？如何理解？

Answer 1

没有倒装成分，就是一般的陈述句，带一个时间状语从句

那个部分如果改写成这样应该就能理解了

care must be taken in order not to ....