1. Without gravity(重力), we ________ walk on the ground as freely as we do now.
A. couldn't B. mustn't C. shan't D. needn't
【答案】A
【解析】
【詳解】考查虛擬語氣。句意:沒有重力,我們不可能像現(xiàn)在這樣自由地在地上行走。A. couldn't不可能;B. mustn't禁止;C. shan't不應(yīng)該;D. needn't 沒必要。由語意可知,本句為與現(xiàn)在事實(shí)相反的虛擬語氣,故句子謂語動詞的否定式要用wouldn't / couldn't/ shouldn't/ mightn't+動詞原形。故選A項(xiàng)。
2. The girl tends ________ when others ask her private questions .
A. getting angry B. to get angry C. getting angrily D. to get angrily
【答案】B
【解析】
【詳解】考查非謂語動詞和系動詞。句意:當(dāng)別人問這個女孩私人問題時,她往往會生氣。根據(jù)tend to do“往往會;常常就”,可知tend后用動詞不定式做賓語;get angry“生氣”,此處get是系動詞,后用形容詞作表語,故選B。