seed 种子[si:d]  soil 土壤[sɔil]  sprout 苗，芽[spraut]    plant 植物，种植[plɑ:nt] 
should 应该[ʃud ]           then 然后[ðen]

第八册
tall → taller更高的[tɔ:l]   short → shorter 更矮的[ʃɔ:t]  strong → stronger 更强壮的[strɔŋ]
old → older 年龄更大的[əuld]  young → younger 更年轻的[jʌŋ] big → bigger 更大的[big]
heavy → heavier 更重的['hi:vi]  long → longer 更长的[lɔŋ]   thin → thinner 更瘦的[θin]
small → smaller 体型更小的[smɔ:l]                     have a fever 发烧[hæv] ['fi:və]
have a sore throat 喉咙疼[ sɔ, sɔə] [θrəut]                      have a cold 感冒[kəuld
have a toothache 牙疼['tu:θeik]                         have a headache 头疼['hedeik]
matter 事情，麻烦'mætə]         sore 疼的[ sɔ ]                    hurt 疼痛[hə:t]
tired 疲劳的，累的['taiəd]    excited 兴奋的[ik'saitid]           angry 生气的['æŋgri]
happy 高兴的['hæpi]        bored 无聊的，烦人的[bɔ:d]    sad 忧伤的，悲伤的[sæd]
watch → watched 看[wɔtʃ    wash → washed 洗[wɔʃt]      clean → cleaned 打扫[kli:n]
play → played 玩[plei]       visit → visited 看望['vizit]do → did last weekend 上一个周末                  go → went 去[gəu] [went]                   go to a park → went to a park 去公园[pɑ:k]