he often thinks of 【how】he can do more for the four modernizations
he (主語(yǔ)）often（狀語(yǔ)（ thinks of （謂語(yǔ)）【how】he can do more for the four modernizations（賓語(yǔ)從句）
i can't understand【why】they insist on going by motorbike
我不明白他們?yōu)槭裁磮?jiān)持要騎摩托車去.
they insist on going by motorbike 這是個(gè)賓語(yǔ)從句.主謂賓齊備,顯然從整個(gè)主從復(fù)合句來(lái)看,是缺一個(gè)副詞why"為什么”,指“原因”
they （主語(yǔ)）insist on （謂語(yǔ)）going by motorbike （賓語(yǔ)）
------兩個(gè)句子,我沒(méi)看到哪個(gè)和定語(yǔ)從句有任何關(guān)系呀?!
請(qǐng)?jiān)诳蛻舳擞疑辖窃u(píng)價(jià)點(diǎn)“滿意”即可