She doubted that the accident could have been avoided.她不认为那场意外本可以避免。Some of them doubted the feasibility of the proposal.有些人怀疑这一提议的可行性.They doubted whether all this work would pay off.他们怀疑这样干是否划得来....
We doubted him a liar.我们怀疑他是个骗子。They doubted his speeding up steps.他们怀疑他是否能加快步伐。No one doubted his ability...没有人怀疑他的能力。His justness is not to be doubted.他的公正毋容置疑.He doubted if he would learn anything new from Marie...他认为...