29. research into / about / on 对...的研究

二 . 重难点

1. optional adj. 可选择的，随意的 option n. 选择，选择权

学校里既有必修课，又有选修课。

2. resist v.

1). 抵抗；抵制；使不受...的伤害

resist sth. 抵制 反抗...使不受...的伤害

resist doing sth. 抵制做某事

叛军与警察对抗。The rebel army resisted the police.

The laborers prepared to resist and to overthrow this Government.

2). 意为"抵御；阻止；抗；耐"。如：

For months the company has resisted changing its accounts system.

这种金属是防锈的___________________________

Jill couldn't resist making jokes about his boldness.

. 她看到甜食就想吃。__________________________

4). resist sth. 抵制 ...的诱惑 resist doing sth. 抵制做某事的诱惑

can't resist (doing) sth. 无法抗拒做某事的诱惑；忍不住做某事

resist the temptation 抵制诱惑 resist arrest 拒捕

[词汇拓展]

resistance n. （不可数）抵抗，对抗；反对, 抵抗力, 阻力 (与to连用)

The firm has to overcome its resistance to new technology.

这家公司必须克服对采用新技术的阻力。

　resistant adj. 抵抗的，有抵抗力的

The seedlings are resistant to cold weather. 这些秧苗有抗寒力。

3. rely on / upon 依靠；依赖；指望，信任；信赖

rely on/ upon sb. to do sth. =rely on sb.s doing sth. 依靠某人做某事

rely on/ upon sb./ sth. (for sth.) 依靠某人/ 某物（做某事）

rely on sb. = trust sb.信赖某人

rely on sth. = depend on sth. 依靠某事

rely on it that... 相信...， 指望...

你放心好了， 他会开车来接你。

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