2、WordsandExpressionsPre-readingcertain['sɜːtn]adj.oneorsomethatcanbenamed某个,某些e.g.Thereare certain thingshedoesthatdrivememad.他的某些举动让我很生气。bakingsoda[beɪkɪŋ]['səʊdə][sɔ:lt]poisonn.['pɔɪzn]scissorsn.['sɪzəz]knifen.[naɪf]knivesn.[naɪvz]heat[hiːt]n.hightemperature,hotness高温、热v.ma