Question

8．這種方法能用來(lái)預(yù)防感冒．
This method can be used to guard against catching a cold．

Answer 1

分析 This method can be used to guard  against catching a cold．

解答 答案：This method can be used to guard against catching a cold．這里是說(shuō)客觀事實(shí)用一般現(xiàn)在時(shí)，主語(yǔ)the method這個(gè)方法，是動(dòng)詞use的承受者，構(gòu)成被動(dòng)關(guān)系，情態(tài)動(dòng)詞can能，故用情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)---情態(tài)動(dòng)詞+be+過(guò)去分詞，use sth to do sth用某物做某事，被動(dòng)語(yǔ)態(tài)是be used to do sth，故This method can be used to，預(yù)防…guard against，后加名詞代詞或動(dòng)名詞，catch a cold感冒，catch的動(dòng)名詞catching，故答案是This method can be used to guard against catching a cold．

點(diǎn)評(píng) used to do 過(guò)去常常做某事 
be used to doing 習(xí)慣于做某事 be used to do sth被用來(lái)做某事