5.應(yīng)該鼓勵高中學(xué)生參加各種各樣的社會活動以拓寬他們的眼界.(horizon)Highschoolstudentsshouldbeencouragedtoparticipateinavarietyofsocialactivitiestoexpandtheirhorizons..

分析 High school students should be encouraged to participate in a variety of social activities to expand their horizons.

解答 High school students should be encouraged to participate in a variety of social activities to expand their horizons.
這是表達(dá)的對事物的一種看法,所以用一般現(xiàn)在時(shí).
根據(jù)句意"應(yīng)該鼓勵高中學(xué)生參加"可知用被動語態(tài)更能夠形象的表達(dá)出句子的意思,be encouraged to do sth.被鼓勵去做某事;participate in參加;expand their horizons拓寬眼界.

點(diǎn)評 a variety of的同義表達(dá):
a variety of=a range of=a lot of=lots of=a diversity of=a good/great many=quantities of

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