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一个m、两个d和g，三n、四p、十个t。(swim)、(nod、rid)、(dig、beg)、(run、win、begin)、(dip、drop、mop、stop)、(sit、hit、fit、set、get、let、put、regret、forget、pat)。  常见双写ing单词 cut-cutting sit-sitting swim-swimming permit-permitting stop-stopping drop-dropping perfect-perferring dig-digging win-winning run-running put-putting begin-beginning get-getting plan-planning admit-admitting (责任编辑：admin) |