teach的过去式是taught，过去分词是taught，现在分词是teaching。

teach的用法1：teach所接的动词不定式,是否加疑问词how,往往取决于工艺大小、复杂与否。工艺大、复杂的,多加how; 工艺小、简单的,一般不加how。如:(how) to swim〔dance,ride,type〕等。但在下面的句子中, how不能省略：He taught me how to light a fire without matches.他教我在没有火柴时怎样生火。teach的过去式例句：We are taught to construe these terms in a particular way.

过去式是taught

She taught me to read.

她教我阅读

Our teacher taught us how to make tie-dye t-shirts today.

我们的老师教我们如何扎染T恤。

My mother taught me how to wrap potstickers.

我妈妈教我怎么包锅贴。