Question

15．Wearen't supposed to laugh at person who is in the trouble．（不應(yīng)該嘲笑處于困境中的人）（laugh）

Answer 1

分析 aren't supposed to laugh at person who is in the trouble．

解答 答案：aren't supposed to laugh at person who is in the trouble．這里是說(shuō)客觀事實(shí)用一般現(xiàn)在時(shí)，表示應(yīng)該做某事be supposed to，主語(yǔ)是we，故用are，后加上not、表否定，故aren't supposed to．嘲笑laugh at，后加賓語(yǔ)person 人，單數(shù)，我們將preson作為先行詞，用定語(yǔ)從句來(lái)修飾，表示處于困境的人，關(guān)系代詞用who指人，作為從句主語(yǔ)，處于困境用be in trouble故答案是aren't supposed to laugh at person who is in the trouble．

點(diǎn)評(píng) be supposed to 的用法
用法一：be supposed to…其中to是動(dòng)詞不定式符號(hào)，不是介詞，其后要跟動(dòng)詞原形．當(dāng)be supposed to…的主語(yǔ)是"人"時(shí)，意為"應(yīng)該…
"；"被期望…"，它可以用來(lái)表示勸告、建議、義務(wù)、責(zé)任等，相當(dāng)于情態(tài)動(dòng)詞should．如：
Everyone is supposed to wear a seat-belt in the car．每個(gè)人在汽車?yán)锒紤?yīng)該系安全帶．
用法：當(dāng)be supposed to…的主語(yǔ)是"物"時(shí)，它表示"本應(yīng)；本該"，用于表示"某事本應(yīng)該發(fā)生而沒(méi)有發(fā)生"．如：
The new laws are supposed to prevent crime．這些新法令本應(yīng)該起到防止犯罪的作用．
用法三：be supposed to后面接"have+過(guò)去分詞"時(shí)，表示"本應(yīng)該做某事而沒(méi)做"．如：
You are supposed to have handed in your homework by now．現(xiàn)在你應(yīng)該已經(jīng)把作業(yè)交上來(lái)了．
用法四：be supposed to…的否定結(jié)構(gòu)為be not supposed to…，它常用于口語(yǔ)中，意為"不被許可；不應(yīng)當(dāng)"．如：
You are not supposed to smoke on the bus．你不應(yīng)該在公共汽車上吸煙