Question

4．飛機(jī)起飛前，乘務(wù)員的職責(zé)之一就是確保所有乘客都系好安全帶．（ensure）Before the plane takes off，one of the flight attendants duties is to ensure that all the passengers have fastened their safety belts．．

Answer 1

分析 Before the plane takes off，one of the flight attendants duties is to ensure that all the passengers have fastened their safety belts．

解答 Before the plane takes off，one of the flight attendants duties is to ensure that all the passengers have fastened their safety belts．
這是描述的乘務(wù)員的基本職責(zé)，所以用一般現(xiàn)在時(shí)．
本句可用before引導(dǎo)一個(gè)時(shí)間狀語(yǔ)從句，主句中用動(dòng)詞不定式作表語(yǔ)，that又引導(dǎo)一個(gè)賓語(yǔ)從句，作動(dòng)詞ensure的賓語(yǔ)．take off起飛，fastened one's safety belts系好某人的安全帶．

點(diǎn)評(píng) 主從復(fù)合句的運(yùn)用能夠更生動(dòng)形象的表達(dá)出句子的意思，同時(shí)也能夠?qū)⒂⒄Z(yǔ)句式的表達(dá)提升到一個(gè)新的高度，所以對(duì)于復(fù)雜句式及非謂語(yǔ)動(dòng)詞的練習(xí)與運(yùn)用還需要進(jìn)一步加強(qiáng)．