英语长难句成分,下面句子的主干?主语及谓语各是什么?The first they dealt with by coating the top of the device with oxides of hafnium,molybdenum and titanium,in layers about 100 nanometres thick他们在设备顶上盖上了大概100纳米厚的二氧化铪、氧化钼和氧化钛的混合物.
问题描述：
英语长难句成分,下面句子的主干?主语及谓语各是什么?
The first they dealt with by coating the top of the device with oxides of hafnium,molybdenum and titanium,in layers about 100 nanometres thick他们在设备顶上盖上了大概100纳米厚的二氧化铪、氧化钼和氧化钛的混合物.
答
The first they dealt with by coating the top of the device with oxides of hafnium, molybdenum and titanium,主干。主语是他们，谓语是盖上。。。
答
主谓结构句子,主语they 谓语dealt with ,by 介词引导方式状语从句,意为：通过…手段,by 后面的动名词coating＋宾语the top of the device,with 后面的宾语补足语修饰the top of the device,最后in layers about 100 nanometres,介词“in”＋名词也构成宾语补足语,修饰the top…,手机打字,