海洋科学导论复习提纲上课讲义(共13页).docx

精选优质文档-倾情为你奉上drink喝drankdrunksell卖soldsoldbroadcast播放broadcastbroadcast1. 以t结尾的词，过去式与原形相同。如：putput, letlet, cutcut, beatbeatspread传播spreadspreadsee看sawseen3. 以n结尾的词，在词后加t。如：meanmeant, burnburnt, learnlearntrid免除rid / riddedrid / riddedmistake误认mistookmistakenbite咬bitbitten / bitsew缝合sewedsewn / sewedhit打hithitshine发光shoneshoneshow显露showedshowed / shownhit打hithitcost花费costcostcut割cutcutlearn学习learnt