2019屆高考英語第一輪單元精練復習教案
【答案與解析】 a deliver one's help to...“幫助……”。
ⅱ.單項填空
1.in my opinion, you are merely ________ than fat. therefore, you needn't lose weight.
a.shorter b.more short
c.less short d.least short
【答案與解析】 b more...than是固定句型，意為“與其……不如”。題意：在我看來，你是因為矮才顯得胖。因此，你不必減肥。
2.he is said________abroad, but i don't know which country he studies in.
a.to study b.to have studied
c.studied d.having studied
【答案與解析】 b 考查“sb be said to do...”句型。根據題意，他去國外學習已是過去的事了，所以應用不定式的完成時。
3.sea water ________ plenty of chemicals, salt ________.
a.contains; including b.contains; included
c.includes; contained d.includes; containing
【答案與解析】 b 考查詞語辨析。題意：海水中含有大量的化學物質，包括鹽。第1個空表示“包含；含有”，并且整體和部分之間彼此沒有關系，要用contain; salt 與 include 之間是被動關系，故用過去分詞形式。如果用including，應寫為including salt。
4.smoking ________ his lung cancer.
a.devotes to b.contributes to
c.causes to d.comes about
【答案與解析】 b 考查短語辨析。 devote to “貢獻”； contribute to “是……的原因之一；有利于”； cause “導致”，后無需跟介詞to; come about “發生”，為不及物動詞短語。題意：吸煙是他患上肺癌的原因之一。
5.it's nearly seven o'clock now. jack ________be here at any moment.
a.must b.need c.should d.can
【答案與解析】 c 考查情態動詞對將來情況的推測用法。need 不用于表示推測； can 表推測時多用于疑問句或否定句；根據信息nearly seven o'clock at the moment，可以確定應選擇should，意為“按常理應當”； must 表示肯定推測。
6.johnny, you________play with the knife, you________hurt yourself.
a.won't; can't b.mustn't; may
c.shouldn't; must d.can't; shouldn't
【答案與解析】 b 考查情態動詞辨析。題意：約翰尼，千萬不要玩刀子，你可能會弄傷自己的。第1空選mustn't，表示禁止；第2空選 may，表示推測。
7.—i'm sorry. i________at you the other day.
—forget it. i was a bit out of control of myself.
a.shouldn't shout b.shouldn't have shouted
c.mustn't shout d.mustn't have shouted
【答案與解析】 b 考查“情態動詞＋完成時”的用法。題意：“對不起，那天我不應該對你大喊大叫。”“沒關系，我也有點兒失控。”shouldn't ＋ have done表示不應該做卻做了某事；而must ＋ have done 表示對過去事情的推測，其否定形式應該用can't ＋ have done。
8.no decision________about any future appointment until all the candidates have been interviewed.